NPOI 之导入导出
2018-06-24 00:06:13来源：未知 阅读 ()
转自https://www.cnblogs.com/zuowj/archive/2015/05/04/4475663.html
转别人的，做了一点点改动
1 using NPOI.HSSF.UserModel; 2 using NPOI.SS.UserModel; 3 using NPOI.XSSF.UserModel; 4 using System; 5 using System.Collections.Generic; 6 using System.Data; 7 using System.Linq; 8 using System.Text; 9 using System.IO; 10 using System.Windows.Forms; 11 using NPOI.SS.Util; 12 using NPOI.HSSF.Util; 13 using System.Reflection; 14 15 namespace RaysUtil.Office.Excel 16 { 17 //titleRow1.Cells[0].Hyperlink = new HSSFHyperlink(HyperlinkType.Url); 18 public static class ExcelHelper 19 { 20 /// <summary> 21 /// 获取保存文件路径 22 /// </summary> 23 /// <returns></returns> 24 private static string GetSaveFilePath() 25 { 26 SaveFileDialog saveFileDig = new SaveFileDialog(); 27 saveFileDig.Filter = "Excel Office97 - 2003(*.xls) | *.xls | Excel Office2007及以上(*.xlsx) | *.xlsx"; 28 saveFileDig.Title = "导出到"; 29 saveFileDig.OverwritePrompt = true; 30 saveFileDig.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory); 31 string filePath = null; 32 if (saveFileDig.ShowDialog() == DialogResult.OK) 33 { 34 filePath = saveFileDig.FileName; 35 } 36 return filePath; 37 } 38 /// <summary> 39 /// 获取要打开要导入的文件名称（含完整路径） 40 /// </summary> 41 /// <returns></returns> 42 private static string GetOpenFilePath() 43 { 44 OpenFileDialog openFileDialog = new OpenFileDialog(); 45 openFileDialog.Filter = "Excel Office97-2003(*.xls)|*.xls|Excel Office2007及以上(*.xlsx)|*.xlsx"; 46 openFileDialog.FilterIndex = 0; 47 openFileDialog.Title = "打开"; 48 openFileDialog.CheckFileExists = true; 49 openFileDialog.CheckPathExists = true; 50 openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory); 51 string filePath = null; 52 if (openFileDialog.ShowDialog() == DialogResult.OK) 53 { 54 filePath = openFileDialog.FileName; 55 } 56 return filePath; 57 } 58 /// <summary> 59 /// 是否兼容模式 60 /// </summary> 61 /// <param name="filePath">文件路径</param> 62 /// <returns></returns> 63 private static bool IsCompatible(string filePath) 64 { 65 //return filePath.EndsWith(".xls", StringComparison.OrdinalIgnoreCase); 66 if (Path.GetExtension(filePath).ToLower() == ".xls") 67 { 68 return true; 69 } 70 else if (Path.GetExtension(filePath).ToLower() == ".xlsx") 71 { 72 return false; 73 } 74 else 75 { 76 throw new Exception("文件扩展名非法或者文件路径不正确！！！"); 77 } 78 } 79 /// <summary> 80 /// 创建工作簿 81 /// </summary> 82 /// <param name="isCompatible">是否兼容模式</param> 83 /// <returns></returns> 84 private static IWorkbook CreateWorkbook(bool isCompatible) 85 { 86 if (isCompatible) 87 { 88 return new HSSFWorkbook(); 89 } 90 else 91 { 92 return new XSSFWorkbook(); 93 } 94 } 95 /// <summary> 96 /// 依据文件流创建工作簿 97 /// </summary> 98 /// <param name="isCompatible"></param> 99 /// <param name="stream"></param> 100 /// <returns></returns> 101 private static IWorkbook CreateWorkbook(bool isCompatible, dynamic stream) 102 { 103 if (isCompatible) 104 { 105 return new HSSFWorkbook(stream); 106 } 107 else 108 { 109 return new XSSFWorkbook(stream); 110 } 111 } 112 /// <summary> 113 /// 创建表格单元格样式 114 /// </summary> 115 /// <param name="workbook">当前工作簿</param> 116 /// <param name="borderStyleB">是否有下边框,默认True</param> 117 /// <param name="borderStyleL">是否有左边框,默认True</param> 118 /// <param name="borderStyleR">是否有右边框,默认True</param> 119 /// <param name="borderStyleT">是否有上边框,默认True</param> 120 /// <param name="borderStyle">有边框的样式,默认薄边框</param> 121 /// <param name="colorIndex">背景色</param> 122 /// <param name="isAlignment">是否横向对齐，默认True</param> 123 /// <param name="horizontalAlignment">横向对齐,默认横向居中</param> 124 /// <param name="verticalAlignment">垂直对齐，默认垂直居中</param> 125 /// <param name="isSetFont">是否设置字体信息,默认False</param> 126 /// <param name="font">字体信息,默认null</param> 127 /// <param name="fontSize">字体大小</param> 128 /// <returns></returns> 129 private static ICellStyle GetCellStyle(IWorkbook workbook, bool borderStyleB = true, bool borderStyleL = true, bool borderStyleR = true, bool borderStyleT = true, NPOI.SS.UserModel.BorderStyle borderStyle = NPOI.SS.UserModel.BorderStyle.Thin, short colorIndex = HSSFColor.LightGreen.Index, bool isAlignment = true, NPOI.SS.UserModel.HorizontalAlignment horizontalAlignment = NPOI.SS.UserModel.HorizontalAlignment.Center, VerticalAlignment verticalAlignment = VerticalAlignment.Center, bool isSetFont = false, IFont font = null, short fontSize = 30) 130 { 131 ICellStyle style = workbook.CreateCellStyle(); 132 style.FillPattern = FillPattern.SolidForeground; 133 style.FillForegroundColor = colorIndex; 134 //边框 135 style.BorderBottom = borderStyleB ? borderStyle : NPOI.SS.UserModel.BorderStyle.None; 136 style.BorderLeft = borderStyleL ? borderStyle : NPOI.SS.UserModel.BorderStyle.None; 137 style.BorderRight = borderStyleR ? borderStyle : NPOI.SS.UserModel.BorderStyle.None; 138 style.BorderTop = borderStyleT ? borderStyle : NPOI.SS.UserModel.BorderStyle.None; 139 //对齐 140 if (isAlignment) 141 { 142 style.Alignment = horizontalAlignment; 143 } 144 else 145 { 146 style.VerticalAlignment = verticalAlignment; 147 } 148 if (isSetFont) 149 { 150 if (font == null) 151 { 152 font = workbook.CreateFont(); 153 font.Boldweight = short.MaxValue; 154 font.FontHeightInPoints = fontSize; 155 } 156 style.SetFont(font); 157 } 158 return style; 159 } 160 /// <summary> 161 /// 创建表格单元格样式 162 /// </summary> 163 /// <param name="workbook">当前工作簿</param> 164 /// <param name="cellStyle">边框样式模板</param> 165 /// <returns></returns> 166 private static ICellStyle GetCellStyle(IWorkbook workbook, CellStyleModel cellStyle) 167 { 168 if (cellStyle==null) 169 { 170 cellStyle = new CellStyleModel(); 171 } 172 ICellStyle style = workbook.CreateCellStyle(); 173 style.FillPattern = FillPattern.SolidForeground; 174 style.FillForegroundColor = cellStyle.ColorIndex; 175 //边框 176 style.BorderBottom = cellStyle.BorderStyleB ? cellStyle.BorderStyle : NPOI.SS.UserModel.BorderStyle.None; 177 style.BorderLeft = cellStyle.BorderStyleL ? cellStyle.BorderStyle : NPOI.SS.UserModel.BorderStyle.None; 178 style.BorderRight = cellStyle.BorderStyleR ? cellStyle.BorderStyle : NPOI.SS.UserModel.BorderStyle.None; 179 style.BorderTop = cellStyle.BorderStyleT ? cellStyle.BorderStyle : NPOI.SS.UserModel.BorderStyle.None; 180 //对齐 181 if (cellStyle.IsAlignment) 182 { 183 style.Alignment = cellStyle.HorizontalAlignment; 184 } 185 else 186 { 187 style.VerticalAlignment = cellStyle.VerticalAlignment; 188 } 189 if (cellStyle.IsSetFont) 190 { 191 if (cellStyle.Font == null) 192 { 193 cellStyle.Font = workbook.CreateFont(); 194 cellStyle.Font.Boldweight = short.MaxValue; 195 cellStyle.Font.FontHeightInPoints = cellStyle.FontSize; 196 } 197 style.SetFont(cellStyle.Font); 198 } 199 return style; 200 } 201 /// <summary> 202 /// 合并单元格 203 /// </summary> 204 /// <param name="sheet">要合并单元格所在的sheet</param> 205 /// <param name="rowStart">开始行的索引</param> 206 /// <param name="rowEnd">结束行的索引</param> 207 /// <param name="colStart">开始列的索引</param> 208 /// <param name="colEnd">结束行的索引</param> 209 public static void SetCellRangeAddress(ISheet sheet, int rowStart, int rowEnd, int colStart, int colEnd) 210 { 211 CellRangeAddress cellRangeAddress = new CellRangeAddress(rowStart, rowEnd, colStart, colEnd); 212 sheet.AddMergedRegion(cellRangeAddress); 213 } 214 /// <summary> 215 /// 工作表生成DataTable 216 /// </summary> 217 /// <param name="sheet"></param> 218 /// <param name="headerRowIndex"></param> 219 /// <returns></returns> 220 private static DataTable GetDataTableFromSheet(ISheet sheet, int headerRowIndex) 221 { 222 DataTable table = new DataTable(); 223 #region 操作首行(标题行) 224 //获取首行 225 IRow headerRow = sheet.GetRow(headerRowIndex); 226 //PhysicalNumberOfCells获取不为空的列个数 227 //LastCellNum获取最后一个不为空的列个数 228 int cellCount = headerRow.LastCellNum; 229 for (int i = headerRow.FirstCellNum; i < cellCount; i++) 230 { 231 if (headerRow.GetCell(i) == null || headerRow.GetCell(i).StringCellValue.Trim() == "") 232 { 233 //如果标题行遇到空列，则不再向后继续读取 234 cellCount = i + 1;//返回真实列数 235 break; 236 } 237 DataColumn column = new DataColumn(headerRow.GetCell(i).StringCellValue); 238 table.Columns.Add(column); 239 } 240 #endregion 241 #region 遍历数据行，标题行除外 242 //遍历数据行，标题行除外 243 for (int i = (headerRowIndex + 1); i < sheet.LastRowNum; i++) 244 { 245 IRow row = sheet.GetRow(i); 246 if (row != null && !string.IsNullOrEmpty(row.Cells[0].StringCellValue)) 247 { 248 DataRow dataRow = table.NewRow(); 249 for (int j = row.FirstCellNum; j < cellCount; j++) 250 { 251 dataRow[i] = row.GetCellEx(j).ToString(); 252 } 253 table.Rows.Add(dataRow); 254 } 255 } 256 #endregion 257 return table; 258 } 259 #region 公共导出方法 260 /// <summary> 261 /// DataSet导出Excel 262 /// </summary> 263 /// <param name="sourceDs">DataSet源</param> 264 /// <param name="filePath">文件保存路径</param> 265 /// <param name="titles">首行标题数组</param> 266 /// <param name="childTitles">子标题数组</param> 267 /// <param name="dateTimes">子标题时间</param> 268 /// <param name="cellStyle">样式类</param> 269 /// <returns>返回生成的Excel保存路径</returns> 270 public static string ExportToExcel(DataSet sourceDs, string filePath, string[] titles = null, string[] childTitles = null, string[] dateTimes = null) 271 { 272 if (string.IsNullOrEmpty(filePath)) 273 { 274 filePath = GetSaveFilePath(); 275 } 276 if (string.IsNullOrEmpty(filePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 277 #region 检测标题、子标题、时间 278 if (titles == null) 279 { 280 titles = new string[sourceDs.Tables.Count]; 281 for (int i = 0; i < titles.Length; i++) 282 { 283 titles[i] = sourceDs.Tables[i].TableName; 284 } 285 } 286 if (dateTimes == null) 287 { 288 dateTimes = new string[sourceDs.Tables.Count]; 289 for (int i = 0; i < dateTimes.Length; i++) 290 { 291 titles[i] = DateTime.Now.ToString("yyyy-MM-dd"); 292 } 293 } 294 if (titles != null && (titles.Length < sourceDs.Tables.Count || titles.Length > sourceDs.Tables.Count)) 295 { 296 throw new Exception(string.Format("工作表行首Title参数个数应该为{0}", sourceDs.Tables.Count)); 297 } 298 if (childTitles != null && (childTitles.Length < sourceDs.Tables.Count || childTitles.Length > sourceDs.Tables.Count)) 299 { 300 throw new Exception(string.Format("工作表行首Title参数个数应该为{0}", sourceDs.Tables.Count)); 301 } 302 if (dateTimes != null && (dateTimes.Length < sourceDs.Tables.Count || dateTimes.Length > sourceDs.Tables.Count)) 303 { 304 throw new Exception(string.Format("工作表行首Title参数个数应该为{0}", sourceDs.Tables.Count)); 305 } 306 #endregion 307 308 309 bool isCompatible = IsCompatible(filePath); 310 IWorkbook workbook = CreateWorkbook(isCompatible); 311 //表头行样式 312 ICellStyle headerCellStyle = GetCellStyle(workbook, colorIndex: 22); 313 //数据行样式 314 ICellStyle dataCellStyle = GetCellStyle(workbook, horizontalAlignment: NPOI.SS.UserModel.HorizontalAlignment.Left, colorIndex: 42); 315 #region sheet处理 316 for (int i = 0; i < sourceDs.Tables.Count; i++) 317 { 318 DataTable table = sourceDs.Tables[i]; 319 string sheetName = string.IsNullOrEmpty(table.TableName) ? "sheet" + i.ToString() : table.TableName; 320 ISheet sheet = workbook.CreateSheet(sheetName); 321 IRow titleRow1 = sheet.CreateRow(0); 322 IRow titleRow2 = sheet.CreateRow(1); 323 IRow headerRow = sheet.CreateRow(2); 324 325 #region 处理首行 326 foreach (DataColumn column in table.Columns) 327 { 328 ICell cell = headerRow.CreateCell(column.Ordinal); 329 ICell titleCell1 = titleRow1.CreateCell(column.Ordinal); 330 ICell titleCell2 = titleRow2.CreateCell(column.Ordinal); 331 cell.SetCellValue(column.ColumnName); 332 cell.CellStyle = headerCellStyle; 333 } 334 //标题行样式 335 int cellMaxIndex = titleRow1.LastCellNum - 1; 336 SetCellRangeAddress(sheet, 0, 0, 0, cellMaxIndex); 337 SetCellRangeAddress(sheet, 1, 1, 0, (int)Math.Floor(cellMaxIndex / 2.0)); 338 SetCellRangeAddress(sheet, 1, 1, (int)Math.Floor(cellMaxIndex / 2.0) + 1, cellMaxIndex); 339 titleRow1.Cells[0].SetCellValue(titles[i]); 340 if (childTitles != null) 341 { 342 titleRow2.Cells[0].SetCellValue(childTitles[i]); 343 } 344 titleRow2.Cells[(int)Math.Floor(cellMaxIndex / 2.0) + 1].SetCellValue(dateTimes[i]); 345 titleRow1.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleB: false, colorIndex: 32767, isSetFont: true)); 346 347 titleRow2.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleT: false, colorIndex: 32767)); 348 titleRow2.Cells[0].CellStyle = GetCellStyle(workbook, borderStyleT: false, borderStyleR: false, colorIndex: 32767); 349 titleRow2.Cells[titleRow2.LastCellNum - 1].CellStyle = GetCellStyle(workbook, borderStyleT: false, borderStyleL: false, colorIndex: 32767); 350 titleRow1.HeightInPoints = 40; 351 titleRow2.HeightInPoints = 20; 352 #endregion 353 354 #region 处理数据行，首行除外 355 int rowIndex = 3; 356 foreach (DataRow row in table.Rows) 357 { 358 IRow dataRow = sheet.CreateRow(rowIndex); 359 foreach (DataColumn column in table.Columns) 360 { 361 ICell dataCell = dataRow.CreateCell(column.Ordinal); 362 dataCell.SetCellValue((row[column] ?? "").ToString()); 363 dataCell.CellStyle = dataCellStyle; 364 } 365 rowIndex++; 366 } 367 #endregion 368 //设置列宽 369 for (int k = 0; k < table.Columns.Count; k++) 370 { 371 sheet.SetColumnWidth(k, (table.Columns[k].Caption.Length < 20 ? 20 : table.Columns[k].Caption.Length) * 256); 372 } 373 } 374 #endregion 375 #region 保存 376 using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 377 { 378 workbook.Write(fs); 379 } 380 workbook = null; 381 #endregion 382 return filePath; 383 } 384 /// <summary> 385 /// DataSet导出Excel 386 /// </summary> 387 /// <param name="sourceDs">DataSet源</param> 388 /// <param name="filePath">文件保存路径</param> 389 /// <param name="titles">首行标题数组</param> 390 /// <param name="childTitles">子标题数组</param> 391 /// <param name="dateTimes">子标题时间</param> 392 /// <param name="cellStyle">样式类</param> 393 /// <returns></returns> 394 public static string ExportToExcel(DataSet sourceDs, string filePath, CellStyleModel cellStyle , string[] titles = null, string[] childTitles = null, string[] dateTimes = null) 395 { 396 if (string.IsNullOrEmpty(filePath)) 397 { 398 filePath = GetSaveFilePath(); 399 } 400 if (string.IsNullOrEmpty(filePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 401 #region 检测标题、子标题、时间 402 if (titles == null) 403 { 404 titles = new string[sourceDs.Tables.Count]; 405 for (int i = 0; i < titles.Length; i++) 406 { 407 titles[i] = sourceDs.Tables[i].TableName; 408 } 409 } 410 if (dateTimes == null) 411 { 412 dateTimes = new string[sourceDs.Tables.Count]; 413 for (int i = 0; i < dateTimes.Length; i++) 414 { 415 titles[i] = DateTime.Now.ToString("yyyy-MM-dd"); 416 } 417 } 418 if (titles != null && (titles.Length < sourceDs.Tables.Count || titles.Length > sourceDs.Tables.Count)) 419 { 420 throw new Exception(string.Format("工作表行首Title参数个数应该为{0}", sourceDs.Tables.Count)); 421 } 422 if (childTitles != null && (childTitles.Length < sourceDs.Tables.Count || childTitles.Length > sourceDs.Tables.Count)) 423 { 424 throw new Exception(string.Format("工作表行首Title参数个数应该为{0}", sourceDs.Tables.Count)); 425 } 426 if (dateTimes != null && (dateTimes.Length < sourceDs.Tables.Count || dateTimes.Length > sourceDs.Tables.Count)) 427 { 428 throw new Exception(string.Format("工作表行首Title参数个数应该为{0}", sourceDs.Tables.Count)); 429 } 430 #endregion 431 432 433 bool isCompatible = IsCompatible(filePath); 434 IWorkbook workbook = CreateWorkbook(isCompatible); 435 //表头行样式 436 ICellStyle headerCellStyle = GetCellStyle(workbook, cellStyle ?? new CellStyleModel { ColorIndex = 22 }); 437 //数据行样式 438 439 ICellStyle dataCellStyle = GetCellStyle(workbook, cellStyle ?? new CellStyleModel { HorizontalAlignment = NPOI.SS.UserModel.HorizontalAlignment.Left, ColorIndex = 42 }); 440 #region sheet处理 441 for (int i = 0; i < sourceDs.Tables.Count; i++) 442 { 443 DataTable table = sourceDs.Tables[i]; 444 string sheetName = string.IsNullOrEmpty(table.TableName) ? "sheet" + i.ToString() : table.TableName; 445 ISheet sheet = workbook.CreateSheet(sheetName); 446 IRow titleRow1 = sheet.CreateRow(0); 447 IRow titleRow2 = sheet.CreateRow(1); 448 IRow headerRow = sheet.CreateRow(2); 449 450 #region 处理首行 451 foreach (DataColumn column in table.Columns) 452 { 453 ICell cell = headerRow.CreateCell(column.Ordinal); 454 ICell titleCell1 = titleRow1.CreateCell(column.Ordinal); 455 ICell titleCell2 = titleRow2.CreateCell(column.Ordinal); 456 cell.SetCellValue(column.ColumnName); 457 cell.CellStyle = headerCellStyle; 458 } 459 //标题行样式 460 int cellMaxIndex = titleRow1.LastCellNum - 1; 461 SetCellRangeAddress(sheet, 0, 0, 0, cellMaxIndex); 462 SetCellRangeAddress(sheet, 1, 1, 0, (int)Math.Floor(cellMaxIndex / 2.0)); 463 SetCellRangeAddress(sheet, 1, 1, (int)Math.Floor(cellMaxIndex / 2.0) + 1, cellMaxIndex); 464 titleRow1.Cells[0].SetCellValue(titles[i]); 465 if (childTitles != null) 466 { 467 titleRow2.Cells[0].SetCellValue(childTitles[i]); 468 } 469 titleRow2.Cells[(int)Math.Floor(cellMaxIndex / 2.0) + 1].SetCellValue(dateTimes[i]); 470 titleRow1.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, 471 cellStyle??new CellStyleModel { BorderStyleB=false,ColorIndex=32767,IsSetFont=true})); 472 473 titleRow2.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, 474 cellStyle??new CellStyleModel { BorderStyleT=false,ColorIndex=32767})); 475 titleRow2.Cells[0].CellStyle = GetCellStyle(workbook, 476 cellStyle??new CellStyleModel { BorderStyleT=false,BorderStyleR=false,ColorIndex=32767}); 477 titleRow2.Cells[titleRow2.LastCellNum - 1].CellStyle = GetCellStyle(workbook, 478 cellStyle??new CellStyleModel { BorderStyleT=false,BorderStyleL=false,ColorIndex=32767}); 479 titleRow1.HeightInPoints = 40; 480 titleRow2.HeightInPoints = 20; 481 #endregion 482 483 #region 处理数据行，首行除外 484 int rowIndex = 3; 485 foreach (DataRow row in table.Rows) 486 { 487 IRow dataRow = sheet.CreateRow(rowIndex); 488 foreach (DataColumn column in table.Columns) 489 { 490 ICell dataCell = dataRow.CreateCell(column.Ordinal); 491 dataCell.SetCellValue((row[column] ?? "").ToString()); 492 dataCell.CellStyle = dataCellStyle; 493 } 494 rowIndex++; 495 } 496 #endregion 497 //设置列宽 498 for (int k = 0; k < table.Columns.Count; k++) 499 { 500 sheet.SetColumnWidth(k, (table.Columns[k].Caption.Length < 20 ? 20 : table.Columns[k].Caption.Length) * 256); 501 } 502 } 503 #endregion 504 #region 保存 505 using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 506 { 507 workbook.Write(fs); 508 } 509 workbook = null; 510 #endregion 511 return filePath; 512 } 513 /// <summary> 514 /// DataTable导出Excel 515 /// </summary> 516 /// <param name="sourceTable">DataTable源</param> 517 /// <param name="sheetName">工作表名称</param> 518 /// <param name="filePath">文件保存路径</param> 519 /// <param name="title">首行标题</param> 520 /// <param name="childTitle">子标题</param> 521 /// <param name="dateTime">子标题时间</param> 522 /// <param name="cellStyle">样式类</param> 523 /// <returns>返回生成的Excel保存路径</returns> 524 public static string ExportToExcel(DataTable sourceTable, string sheetName = "sheet1", string filePath = null, string title = "", string childTitle = "", string dateTime = "") 525 { 526 if (sourceTable.Rows.Count <= 0) throw new ArgumentException("DataTable源不存在有效的数据!"); 527 if (string.IsNullOrEmpty(filePath)) 528 { 529 filePath = GetSaveFilePath(); 530 } 531 if (string.IsNullOrEmpty(filePath)) throw new ArgumentNullException("excel文件路径为空字符串或null!"); 532 bool isCompatible = IsCompatible(filePath); 533 IWorkbook workbook = CreateWorkbook(isCompatible); 534 //表头行样式 535 ICellStyle headerCellStyle = GetCellStyle(workbook, colorIndex: 22); 536 //数据行样式 537 ICellStyle dataCellStyle = GetCellStyle(workbook, horizontalAlignment: NPOI.SS.UserModel.HorizontalAlignment.Left, colorIndex: 42); 538 ISheet sheet = workbook.CreateSheet(sheetName); 539 IRow titleRow1 = sheet.CreateRow(0); 540 IRow titleRow2 = sheet.CreateRow(1); 541 IRow headerRow = sheet.CreateRow(2); 542 543 #region 处理首行 544 foreach (DataColumn column in sourceTable.Columns) 545 { 546 ICell cell = headerRow.CreateCell(column.Ordinal); 547 ICell titleCell1 = titleRow1.CreateCell(column.Ordinal); 548 ICell titleCell2 = titleRow2.CreateCell(column.Ordinal); 549 cell.SetCellValue(column.ColumnName); 550 cell.CellStyle = headerCellStyle; 551 } 552 553 //标题行样式 554 int cellMaxIndex = titleRow1.LastCellNum - 1; 555 SetCellRangeAddress(sheet, 0, 0, 0, titleRow1.LastCellNum - 1); 556 SetCellRangeAddress(sheet, 1, 1, 0, (int)Math.Floor(cellMaxIndex / 2.0)); 557 SetCellRangeAddress(sheet, 1, 1, (int)Math.Floor(cellMaxIndex / 2.0) + 1, cellMaxIndex); 558 559 titleRow1.Cells[0].SetCellValue(string.IsNullOrEmpty(title) ? sourceTable.TableName : title); 560 titleRow2.Cells[0].SetCellValue(childTitle); 561 titleRow2.Cells[(int)Math.Floor(cellMaxIndex / 2.0) + 1].SetCellValue(string.IsNullOrEmpty(dateTime) ? DateTime.Now.ToString("yyyy-MM-dd") : dateTime); 562 563 titleRow1.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleB: false, colorIndex: 32767, isSetFont: true)); 564 565 //titleRow2.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleT: false, colorIndex: 32767)); 566 titleRow2.Cells[0].CellStyle = GetCellStyle(workbook, borderStyleT: false, borderStyleR: false, colorIndex: 32767); 567 titleRow2.Cells[titleRow2.LastCellNum - 1].CellStyle = GetCellStyle(workbook, borderStyleT: false, borderStyleL: false, colorIndex: 32767); 568 569 titleRow1.HeightInPoints = 40; 570 titleRow2.HeightInPoints = 20; 571 #endregion 572 573 #region 处理数据行，首行除外 574 int rowIndex = 3; 575 foreach (DataRow row in sourceTable.Rows) 576 { 577 IRow dataRow = sheet.CreateRow(rowIndex); 578 foreach (DataColumn column in sourceTable.Columns) 579 { 580 ICell dataCell = dataRow.CreateCell(column.Ordinal); 581 dataCell.SetCellValue((row[column] ?? "").ToString()); 582 dataCell.CellStyle = dataCellStyle; 583 } 584 rowIndex++; 585 } 586 //设置列宽 587 for (int k = 0; k < sourceTable.Columns.Count; k++) 588 { 589 sheet.SetColumnWidth(k, (sourceTable.Columns[k].Caption.Length < 20 ? 20 : sourceTable.Columns[k].Caption.Length) * 256); 590 } 591 #endregion 592 #region 保存 593 using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 594 { 595 workbook.Write(fs); 596 } 597 sheet = null; 598 headerRow = null; 599 workbook = null; 600 #endregion 601 return filePath; 602 } 603 /// <summary> 604 /// DataTable导出Excel 605 /// </summary> 606 /// <param name="sourceTable">DataTable源</param> 607 /// <param name="sheetName">工作表名称</param> 608 /// <param name="filePath">文件保存路径</param> 609 /// <param name="title">首行标题</param> 610 /// <param name="childTitle">子标题</param> 611 /// <param name="dateTime">子标题时间</param> 612 /// <param name="cellStyle">样式类</param> 613 /// <returns></returns> 614 public static string ExportToExcel(DataTable sourceTable, CellStyleModel cellStyle, string sheetName = "sheet1", string filePath = null, string title = "", string childTitle = "", string dateTime = "") 615 { 616 if (sourceTable.Rows.Count <= 0) throw new ArgumentException("DataTable源不存在有效的数据!"); 617 if (string.IsNullOrEmpty(filePath)) 618 { 619 filePath = GetSaveFilePath(); 620 } 621 if (string.IsNullOrEmpty(filePath)) throw new ArgumentNullException("excel文件路径为空字符串或null!"); 622 bool isCompatible = IsCompatible(filePath); 623 IWorkbook workbook = CreateWorkbook(isCompatible); 624 //表头行样式 625 ICellStyle headerCellStyle = GetCellStyle(workbook, cellStyle??new CellStyleModel { ColorIndex=22}); 626 //数据行样式 627 ICellStyle dataCellStyle = GetCellStyle(workbook, cellStyle??new CellStyleModel { HorizontalAlignment=NPOI.SS.UserModel.HorizontalAlignment.Left,ColorIndex=42}); 628 ISheet sheet = workbook.CreateSheet(sheetName); 629 IRow titleRow1 = sheet.CreateRow(0); 630 IRow titleRow2 = sheet.CreateRow(1); 631 IRow headerRow = sheet.CreateRow(2); 632 633 #region 处理首行 634 foreach (DataColumn column in sourceTable.Columns) 635 { 636 ICell cell = headerRow.CreateCell(column.Ordinal); 637 ICell titleCell1 = titleRow1.CreateCell(column.Ordinal); 638 ICell titleCell2 = titleRow2.CreateCell(column.Ordinal); 639 cell.SetCellValue(column.ColumnName); 640 cell.CellStyle = headerCellStyle; 641 } 642 643 //标题行样式 644 int cellMaxIndex = titleRow1.LastCellNum - 1; 645 SetCellRangeAddress(sheet, 0, 0, 0, titleRow1.LastCellNum - 1); 646 SetCellRangeAddress(sheet, 1, 1, 0, (int)Math.Floor(cellMaxIndex / 2.0)); 647 SetCellRangeAddress(sheet, 1, 1, (int)Math.Floor(cellMaxIndex / 2.0) + 1, cellMaxIndex); 648 649 titleRow1.Cells[0].SetCellValue(string.IsNullOrEmpty(title) ? sourceTable.TableName : title); 650 titleRow2.Cells[0].SetCellValue(childTitle); 651 titleRow2.Cells[(int)Math.Floor(cellMaxIndex / 2.0) + 1].SetCellValue(string.IsNullOrEmpty(dateTime) ? DateTime.Now.ToString("yyyy-MM-dd") : dateTime); 652 653 titleRow1.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, 654 cellStyle??new CellStyleModel { BorderStyleB=false,ColorIndex=32767,IsSetFont=true})); 655 //titleRow2.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleT: false, colorIndex: 32767)); 656 titleRow2.Cells[0].CellStyle = GetCellStyle(workbook, 657 cellStyle??new CellStyleModel { BorderStyleT=false,BorderStyleR=false,ColorIndex=32767}); 658 titleRow2.Cells[titleRow2.LastCellNum - 1].CellStyle = GetCellStyle(workbook, 659 cellStyle??new CellStyleModel { BorderStyleT=false,BorderStyleL=false,ColorIndex=32767}); 660 titleRow1.HeightInPoints = 40; 661 titleRow2.HeightInPoints = 20; 662 #endregion 663 664 #region 处理数据行，首行除外 665 int rowIndex = 3; 666 foreach (DataRow row in sourceTable.Rows) 667 { 668 IRow dataRow = sheet.CreateRow(rowIndex); 669 foreach (DataColumn column in sourceTable.Columns) 670 { 671 ICell dataCell = dataRow.CreateCell(column.Ordinal); 672 dataCell.SetCellValue((row[column] ?? "").ToString()); 673 dataCell.CellStyle = dataCellStyle; 674 } 675 rowIndex++; 676 } 677 //设置列宽 678 for (int k = 0; k < sourceTable.Columns.Count; k++) 679 { 680 sheet.SetColumnWidth(k, (sourceTable.Columns[k].Caption.Length < 20 ? 20 : sourceTable.Columns[k].Caption.Length) * 256); 681 } 682 #endregion 683 #region 保存 684 using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 685 { 686 workbook.Write(fs); 687 } 688 sheet = null; 689 headerRow = null; 690 workbook = null; 691 #endregion 692 return filePath; 693 } 694 /// <summary> 695 /// List导出Excel 696 /// </summary> 697 /// <typeparam name="T">List元素类型</typeparam> 698 /// <param name="data">List数据源</param> 699 /// <param name="headerNameList">首行数据映射源</param> 700 /// <param name="sheetName">工作表名称</param> 701 /// <param name="filePath">导出的文件地址</param> 702 /// <param name="title">首行标题</param> 703 /// <param name="childTitle">子标题</param> 704 /// <param name="dateTime">子标题时间</param> 705 /// <returns></returns> 706 public static string ExportToExcel<T>(List<T> data, IList<KeyValuePair<string, string>> headerNameList, string sheetName = "sheet1", string filePath = null, string title = "", string childTitle = "", string dateTime = "") where T : class 707 { 708 if (data.Count <= 0) throw new ArgumentException("List数据源不存在有效的数据"); 709 if (string.IsNullOrEmpty(filePath)) 710 { 711 filePath = GetSaveFilePath(); 712 } 713 if (string.IsNullOrEmpty(filePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 714 bool isCompatible = IsCompatible(filePath); 715 IWorkbook workbook = CreateWorkbook(isCompatible); 716 //表头行样式 717 ICellStyle headerCellStyle = GetCellStyle(workbook, colorIndex: 22); 718 //数据行样式 719 ICellStyle dataCellStyle = GetCellStyle(workbook, horizontalAlignment: NPOI.SS.UserModel.HorizontalAlignment.Left, colorIndex: 42); 720 ISheet sheet = workbook.CreateSheet(sheetName); 721 IRow titleRow1 = sheet.CreateRow(0); 722 IRow titleRow2 = sheet.CreateRow(1); 723 IRow headerRow = sheet.CreateRow(2); 724 725 #region 处理首行 726 for (int i = 0; i < headerNameList.Count; i++) 727 { 728 ICell cell = headerRow.CreateCell(i); 729 ICell titleCell1 = titleRow1.CreateCell(i); 730 ICell titleCell2 = titleRow2.CreateCell(i); 731 cell.SetCellValue(headerNameList[i].Value); 732 cell.CellStyle = headerCellStyle; 733 } 734 //标题行样式 735 int cellMaxIndex = titleRow1.LastCellNum - 1; 736 SetCellRangeAddress(sheet, 0, 0, 0, cellMaxIndex); 737 SetCellRangeAddress(sheet, 1, 1, 0, (int)Math.Floor(cellMaxIndex / 2.0)); 738 SetCellRangeAddress(sheet, 1, 1, (int)Math.Floor(cellMaxIndex / 2.0) + 1, cellMaxIndex); 739 //Console.WriteLine("合并后列数是{0}",titleRow1.PhysicalNumberOfCells); 740 titleRow1.Cells[0].SetCellValue(string.IsNullOrEmpty(title) ? sheetName : title); 741 titleRow2.Cells[0].SetCellValue(childTitle); 742 titleRow2.Cells[(int)Math.Floor(cellMaxIndex / 2.0) + 1].SetCellValue(string.IsNullOrEmpty(dateTime) ? DateTime.Now.ToString("yyyy-MM-dd") : dateTime); 743 titleRow1.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleB: false, colorIndex: 32767, isSetFont: true)); 744 745 //titleRow2.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleT: false, colorIndex: 32767)); 746 titleRow2.Cells[0].CellStyle = GetCellStyle(workbook, borderStyleT: false, borderStyleR: false, colorIndex: 32767); 747 titleRow2.Cells[titleRow2.LastCellNum - 1].CellStyle = GetCellStyle(workbook, borderStyleT: false, borderStyleL: false, colorIndex: 32767); 748 titleRow1.HeightInPoints = 40; 749 titleRow2.HeightInPoints = 20; 750 #endregion 751 #region 处理数据行 752 Type t = typeof(T); 753 int rowIndex = 3; 754 foreach (T item in data) 755 { 756 IRow dataRow = sheet.CreateRow(rowIndex); 757 for (int j = 0; j < headerNameList.Count; j++) 758 { 759 object pValue = t.GetProperty(headerNameList[j].Key).GetValue(item, null); 760 ICell dataCell = dataRow.CreateCell(j); 761 dataCell.SetCellValue((pValue ?? "").ToString()); 762 dataCell.CellStyle = dataCellStyle; 763 } 764 rowIndex++; 765 } 766 //设置列宽 767 for (int k = 0; k < headerRow.Cells.Count; k++) 768 { 769 sheet.SetColumnWidth(k, (headerRow.Cells[k].StringCellValue.Length < 20 ? 20 : headerRow.Cells[k].StringCellValue.Length) * 256); 770 } 771 #endregion 772 FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite); 773 workbook.Write(fs); 774 fs.Dispose(); 775 sheet = null; 776 headerRow = null; 777 workbook = null; 778 return filePath; 779 } 780 /// <summary> 781 /// List导出Excel 782 /// </summary> 783 /// <typeparam name="T">List元素类型</typeparam> 784 /// <param name="data">List数据源</param> 785 /// <param name="headerNameList">首行数据映射源</param> 786 /// <param name="sheetName">工作表名称</param> 787 /// <param name="filePath">导出的文件地址</param> 788 /// <param name="title">首行标题</param> 789 /// <param name="childTitle">子标题</param> 790 /// <param name="dateTime">子标题时间</param> 791 /// <param name="cellStyle">样式类</param> 792 /// <returns></returns> 793 public static string ExportToExcel<T>(List<T> data, IList<KeyValuePair<string, string>> headerNameList, CellStyleModel cellStyle, string sheetName = "sheet1", string filePath = null, string title = "", string childTitle = "", string dateTime = "") where T : class 794 { 795 if (data.Count <= 0) throw new ArgumentException("List数据源不存在有效的数据"); 796 if (string.IsNullOrEmpty(filePath)) 797 { 798 filePath = GetSaveFilePath(); 799 } 800 if (string.IsNullOrEmpty(filePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 801 bool isCompatible = IsCompatible(filePath); 802 IWorkbook workbook = CreateWorkbook(isCompatible); 803 //表头行样式 804 ICellStyle headerCellStyle = GetCellStyle(workbook, cellStyle??new CellStyleModel { ColorIndex=22}); 805 //数据行样式 806 ICellStyle dataCellStyle = GetCellStyle(workbook, 807 cellStyle??new CellStyleModel { HorizontalAlignment= NPOI.SS.UserModel.HorizontalAlignment.Left,ColorIndex=42}); 808 ISheet sheet = workbook.CreateSheet(sheetName); 809 IRow titleRow1 = sheet.CreateRow(0); 810 IRow titleRow2 = sheet.CreateRow(1); 811 IRow headerRow = sheet.CreateRow(2); 812 813 #region 处理首行 814 for (int i = 0; i < headerNameList.Count; i++) 815 { 816 ICell cell = headerRow.CreateCell(i); 817 ICell titleCell1 = titleRow1.CreateCell(i); 818 ICell titleCell2 = titleRow2.CreateCell(i); 819 cell.SetCellValue(headerNameList[i].Value); 820 cell.CellStyle = headerCellStyle; 821 } 822 //标题行样式 823 int cellMaxIndex = titleRow1.LastCellNum - 1; 824 SetCellRangeAddress(sheet, 0, 0, 0, cellMaxIndex); 825 SetCellRangeAddress(sheet, 1, 1, 0, (int)Math.Floor(cellMaxIndex / 2.0)); 826 SetCellRangeAddress(sheet, 1, 1, (int)Math.Floor(cellMaxIndex / 2.0) + 1, cellMaxIndex); 827 //Console.WriteLine("合并后列数是{0}",titleRow1.PhysicalNumberOfCells); 828 titleRow1.Cells[0].SetCellValue(string.IsNullOrEmpty(title) ? sheetName : title); 829 titleRow2.Cells[0].SetCellValue(childTitle); 830 titleRow2.Cells[(int)Math.Floor(cellMaxIndex / 2.0) + 1].SetCellValue(string.IsNullOrEmpty(dateTime) ? DateTime.Now.ToString("yyyy-MM-dd") : dateTime); 831 titleRow1.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, 832 cellStyle??new CellStyleModel { BorderStyleB=false,ColorIndex=32767,IsSetFont=true})); 833 //titleRow2.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleT: false, colorIndex: 32767)); 834 titleRow2.Cells[0].CellStyle = GetCellStyle(workbook, 835 cellStyle??new CellStyleModel { BorderStyleT=false,BorderStyleR=false,ColorIndex=32767}); 836 titleRow2.Cells[titleRow2.LastCellNum - 1].CellStyle = GetCellStyle(workbook, 837 cellStyle??new CellStyleModel { BorderStyleT=false,BorderStyleL=false,ColorIndex=32767}); 838 titleRow1.HeightInPoints = 40; 839 titleRow2.HeightInPoints = 20; 840 #endregion 841 #region 处理数据行 842 Type t = typeof(T); 843 int rowIndex = 3; 844 foreach (T item in data) 845 { 846 IRow dataRow = sheet.CreateRow(rowIndex); 847 for (int j = 0; j < headerNameList.Count; j++) 848 { 849 object pValue = t.GetProperty(headerNameList[j].Key).GetValue(item, null); 850 ICell dataCell = dataRow.CreateCell(j); 851 dataCell.SetCellValue((pValue ?? "").ToString()); 852 dataCell.CellStyle = dataCellStyle; 853 } 854 rowIndex++; 855 } 856 //设置列宽 857 for (int k = 0; k < headerRow.Cells.Count; k++) 858 { 859 sheet.SetColumnWidth(k, (headerRow.Cells[k].StringCellValue.Length < 20 ? 20 : headerRow.Cells[k].StringCellValue.Length) * 256); 860 } 861 #endregion 862 FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite); 863 workbook.Write(fs); 864 fs.Dispose(); 865 sheet = null; 866 headerRow = null; 867 workbook = null; 868 return filePath; 869 } 870 /// <summary> 871 /// DataGridView导出Excel 872 /// </summary> 873 /// <param name="grid">DataGridView数据源</param> 874 /// <param name="sheetName">工作表名称</param> 875 /// <param name="filePath">文件路径</param> 876 /// <param name="title">首行标题</param> 877 /// <param name="childTitle">子标题</param> 878 /// <param name="dateTime">子标题时间</param> 879 /// <returns></returns> 880 public static string ExportToExcel(DataGridView grid, string sheetName = "sheet1", string filePath = null, string title = "", string childTitle = "", string dateTime = "") 881 { 882 if (grid.Rows.Count <= 0) throw new ArgumentException("DataGridView数据源不存在游侠的数据！"); 883 if (string.IsNullOrEmpty(filePath)) 884 { 885 filePath = GetSaveFilePath(); 886 } 887 if (string.IsNullOrEmpty(filePath)) throw new ArgumentNullException("excel文件路径为空字符串或null!"); 888 bool isCompatible = IsCompatible(filePath); 889 IWorkbook workbook = CreateWorkbook(isCompatible); 890 //表头行样式 891 ICellStyle headerCellStyle = GetCellStyle(workbook, colorIndex: 22); 892 //数据行样式 893 ICellStyle dataCellStyle = GetCellStyle(workbook, horizontalAlignment: NPOI.SS.UserModel.HorizontalAlignment.Left, colorIndex: 42); 894 ISheet sheet = workbook.CreateSheet(sheetName); 895 IRow titleRow1 = sheet.CreateRow(0); 896 IRow titleRow2 = sheet.CreateRow(1); 897 IRow headerRow = sheet.CreateRow(2); 898 899 for (int i = 0; i < grid.Columns.Count; i++) 900 { 901 ICell cell = headerRow.CreateCell(i); 902 ICell titleCell1 = titleRow1.CreateCell(i); 903 ICell titleCell2 = titleRow2.CreateCell(i); 904 cell.SetCellValue(grid.Columns[i].HeaderText); 905 cell.CellStyle = headerCellStyle; 906 } 907 //标题行样式 908 int cellMaxIndex = titleRow1.LastCellNum - 1; 909 SetCellRangeAddress(sheet, 0, 0, 0, titleRow1.LastCellNum - 1); 910 SetCellRangeAddress(sheet, 1, 1, 0, (int)Math.Floor(cellMaxIndex / 2.0)); 911 SetCellRangeAddress(sheet, 1, 1, (int)Math.Floor(cellMaxIndex / 2.0) + 1, cellMaxIndex); 912 titleRow1.Cells[0].SetCellValue(string.IsNullOrEmpty(title) ? sheetName : title); 913 titleRow2.Cells[0].SetCellValue(childTitle); 914 titleRow2.Cells[(int)Math.Floor(cellMaxIndex / 2.0) + 1].SetCellValue(string.IsNullOrEmpty(dateTime) ? DateTime.Now.ToString("yyyy-MM-dd") : dateTime); 915 titleRow1.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleB: false, colorIndex: 32767, isSetFont: true)); 916 917 //titleRow2.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleT: false, colorIndex: 32767)); 918 titleRow2.Cells[0].CellStyle = GetCellStyle(workbook, borderStyleT: false, borderStyleR: false, colorIndex: 32767); 919 titleRow2.Cells[titleRow2.LastCellNum - 1].CellStyle = GetCellStyle(workbook, borderStyleT: false, borderStyleL: false, colorIndex: 32767); 920 titleRow1.HeightInPoints = 40; 921 titleRow2.HeightInPoints = 20; 922 923 int rowIndex = 3; 924 foreach (DataGridViewRow row in grid.Rows) 925 { 926 IRow dataRow = sheet.CreateRow(rowIndex); 927 for (int j = 0; j < grid.Columns.Count; j++) 928 { 929 ICell dataCell = dataRow.CreateCell(j); 930 dataCell.SetCellValue((row.Cells[j].Value ?? "").ToString()); 931 dataCell.CellStyle = dataCellStyle; 932 } 933 rowIndex++; 934 } 935 936 //设置列宽 937 for (int k = 0; k < grid.Columns.Count; k++) 938 { 939 sheet.SetColumnWidth(k, (grid.Columns[k].HeaderText.Length < 20 ? 20 : grid.Columns[k].HeaderText.Length) * 256); 940 } 941 FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite); 942 workbook.Write(fs); 943 fs.Dispose(); 944 sheet = null; 945 headerRow = null; 946 workbook = null; 947 return filePath; 948 } 949 /// <summary> 950 /// DataGridView导出Excel 951 /// </summary> 952 /// <param name="grid">DataGridView数据源</param> 953 /// <param name="sheetName">工作表名称</param> 954 /// <param name="filePath">文件路径</param> 955 /// <param name="title">首行标题</param> 956 /// <param name="childTitle">子标题</param> 957 /// <param name="dateTime">子标题时间</param> 958 /// <param name="cellStyle">样式类</param> 959 /// <returns></returns> 960 public static string ExportToExcel(DataGridView grid, CellStyleModel cellStyle, string sheetName = "sheet1", string filePath = null, string title = "", string childTitle = "", string dateTime = "") 961 { 962 if (grid.Rows.Count <= 0) throw new ArgumentException("DataGridView数据源不存在游侠的数据！"); 963 if (string.IsNullOrEmpty(filePath)) 964 { 965 filePath = GetSaveFilePath(); 966 } 967 if (string.IsNullOrEmpty(filePath)) throw new ArgumentNullException("excel文件路径为空字符串或null!"); 968 bool isCompatible = IsCompatible(filePath); 969 IWorkbook workbook = CreateWorkbook(isCompatible); 970 //表头行样式 971 ICellStyle headerCellStyle = GetCellStyle(workbook, cellStyle??new CellStyleModel { ColorIndex=22}); 972 //数据行样式 973 ICellStyle dataCellStyle = GetCellStyle(workbook,cellStyle??new CellStyleModel { HorizontalAlignment=NPOI.SS.UserModel.HorizontalAlignment.Left,ColorIndex=42}); 974 ISheet sheet = workbook.CreateSheet(sheetName); 975 IRow titleRow1 = sheet.CreateRow(0); 976 IRow titleRow2 = sheet.CreateRow(1); 977 IRow headerRow = sheet.CreateRow(2); 978 979 for (int i = 0; i < grid.Columns.Count; i++) 980 { 981 ICell cell = headerRow.CreateCell(i); 982 ICell titleCell1 = titleRow1.CreateCell(i); 983 ICell titleCell2 = titleRow2.CreateCell(i); 984 cell.SetCellValue(grid.Columns[i].HeaderText); 985 cell.CellStyle = headerCellStyle; 986 } 987 //标题行样式 988 int cellMaxIndex = titleRow1.LastCellNum - 1; 989 SetCellRangeAddress(sheet, 0, 0, 0, titleRow1.LastCellNum - 1); 990 SetCellRangeAddress(sheet, 1, 1, 0, (int)Math.Floor(cellMaxIndex / 2.0)); 991 SetCellRangeAddress(sheet, 1, 1, (int)Math.Floor(cellMaxIndex / 2.0) + 1, cellMaxIndex); 992 titleRow1.Cells[0].SetCellValue(string.IsNullOrEmpty(title) ? sheetName : title); 993 titleRow2.Cells[0].SetCellValue(childTitle); 994 titleRow2.Cells[(int)Math.Floor(cellMaxIndex / 2.0) + 1].SetCellValue(string.IsNullOrEmpty(dateTime) ? DateTime.Now.ToString("yyyy-MM-dd") : dateTime); 995 titleRow1.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, 996 cellStyle??new CellStyleModel { BorderStyleB=false,ColorIndex=32767,IsSetFont=true})); 997 //titleRow2.Cells.ForEach(c => c.CellStyle = GetCellStyle(workbook, borderStyleT: false, colorIndex: 32767)); 998 titleRow2.Cells[0].CellStyle = GetCellStyle(workbook, 999 cellStyle??new CellStyleModel { BorderStyleT=false,BorderStyleR=false,ColorIndex=32767}); 1000 titleRow2.Cells[titleRow2.LastCellNum - 1].CellStyle = GetCellStyle(workbook, 1001 cellStyle??new CellStyleModel { BorderStyleT=false,BorderStyleL=false,ColorIndex=32767}); 1002 titleRow1.HeightInPoints = 40; 1003 titleRow2.HeightInPoints = 20; 1004 int rowIndex = 3; 1005 foreach (DataGridViewRow row in grid.Rows) 1006 { 1007 IRow dataRow = sheet.CreateRow(rowIndex); 1008 for (int j = 0; j < grid.Columns.Count; j++) 1009 { 1010 ICell dataCell = dataRow.CreateCell(j); 1011 dataCell.SetCellValue((row.Cells[j].Value ?? "").ToString()); 1012 dataCell.CellStyle = dataCellStyle; 1013 } 1014 rowIndex++; 1015 } 1016 1017 //设置列宽 1018 for (int k = 0; k < grid.Columns.Count; k++) 1019 { 1020 sheet.SetColumnWidth(k, (grid.Columns[k].HeaderText.Length < 20 ? 20 : grid.Columns[k].HeaderText.Length) * 256); 1021 } 1022 FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite); 1023 workbook.Write(fs); 1024 fs.Dispose(); 1025 sheet = null; 1026 headerRow = null; 1027 workbook = null; 1028 return filePath; 1029 } 1030 #endregion 1031 #region 公共导入方法 1032 /// <summary> 1033 /// 由Excel导入DataTable 1034 /// </summary> 1035 /// <param name="excelFileStream">Excel文件流</param> 1036 /// <param name="sheetName">工作表名称</param> 1037 /// <param name="headerRowIndex">表头行索引</param> 1038 /// <param name="isCompatible">是否兼容模式</param> 1039 /// <returns>返回DataTable</returns> 1040 public static DataTable ImportFromExcel(Stream excelFileStream, string sheetName, int headerRowIndex, bool isCompatible) 1041 { 1042 IWorkbook workbook = CreateWorkbook(isCompatible, excelFileStream); 1043 ISheet sheet = null; 1044 int sheetIndex = -1; 1045 if (int.TryParse(sheetName, out sheetIndex)) 1046 { 1047 sheet = workbook.GetSheetAt(sheetIndex); 1048 } 1049 else 1050 { 1051 sheet = workbook.GetSheet(sheetName); 1052 } 1053 DataTable table = GetDataTableFromSheet(sheet, headerRowIndex); 1054 excelFileStream.Close(); 1055 workbook = null; 1056 sheet = null; 1057 return table; 1058 } 1059 /// <summary> 1060 /// 由Excel导入DataTable 1061 /// </summary> 1062 /// <param name="excelFilePath">Excel文件路径</param> 1063 /// <param name="sheetName">工作表名称</param> 1064 /// <param name="headerRowIndex">表头行索引</param> 1065 /// <returns></returns> 1066 public static DataTable ImportFromExcel(string excelFilePath, string sheetName, int headerRowIndex) 1067 { 1068 if (string.IsNullOrEmpty(excelFilePath)) 1069 { 1070 excelFilePath = GetOpenFilePath(); 1071 } 1072 if (string.IsNullOrEmpty(excelFilePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 1073 using (FileStream fs = File.OpenRead(excelFilePath)) 1074 { 1075 bool isCompatible = IsCompatible(excelFilePath); 1076 return ImportFromExcel(fs, sheetName, headerRowIndex, isCompatible); 1077 } 1078 } 1079 /// <summary> 1080 /// Excel导入DataSet,如果有多个工作表，则导入多个DataTable 1081 /// </summary> 1082 /// <param name="excelFileStream">Excel文件流</param> 1083 /// <param name="headRowIndex">表头行索引</param> 1084 /// <param name="isCompatible">是否兼容模式</param> 1085 /// <returns>返回dataSet</returns> 1086 public static DataSet ImportFromExcel(Stream excelFileStream, int headerRowIndex, bool isCompatible) 1087 { 1088 DataSet ds = new DataSet(); 1089 IWorkbook workbook = CreateWorkbook(isCompatible, excelFileStream); 1090 for (int i = 0; i < workbook.NumberOfSheets; i++) 1091 { 1092 ISheet sheet = workbook.GetSheetAt(i); 1093 DataTable table = GetDataTableFromSheet(sheet, headerRowIndex); 1094 ds.Tables.Add(table); 1095 } 1096 excelFileStream.Close(); 1097 workbook = null; 1098 return ds; 1099 } 1100 /// <summary> 1101 /// Excel导入DataSet,如果有多个工作表，则导入多个DataTable 1102 /// </summary> 1103 /// <param name="excelFilePath">Excel文件路径</param> 1104 /// <param name="headerRowIndex">表头行索引</param> 1105 /// <returns>返回dataSet</returns> 1106 public static DataSet ImportFromExcel(string excelFilePath, int headerRowIndex) 1107 { 1108 if (string.IsNullOrEmpty(excelFilePath)) 1109 { 1110 excelFilePath = GetOpenFilePath(); 1111 } 1112 if (string.IsNullOrEmpty(excelFilePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 1113 using (FileStream fs = File.OpenRead(excelFilePath)) 1114 { 1115 bool isCompatible = IsCompatible(excelFilePath); 1116 return ImportFromExcel(fs, headerRowIndex, isCompatible); 1117 } 1118 } 1119 /// <summary> 1120 /// Excel导入List 1121 /// </summary> 1122 /// <typeparam name="T">实体类</typeparam> 1123 /// <param name="excelFilePath">Excel文件全路径</param> 1124 /// <param name="headerRowIndex">行索引</param> 1125 /// <returns></returns> 1126 public static IList<T> ImportFromExcel<T>(string excelFilePath, int headerRowIndex = 0) where T : class, new() 1127 { 1128 IList<T> list = new List<T>(); 1129 if (string.IsNullOrEmpty(excelFilePath)) 1130 { 1131 excelFilePath = GetOpenFilePath(); 1132 } 1133 if (string.IsNullOrEmpty(excelFilePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 1134 try 1135 { 1136 using (FileStream fs = File.OpenRead(excelFilePath)) 1137 { 1138 bool isComPatible = IsCompatible(excelFilePath); 1139 IWorkbook workbook = CreateWorkbook(isComPatible, fs); 1140 ISheet sheet = workbook.GetSheetAt(0); 1141 IRow headerRow = sheet.GetRow(0); 1142 int headerCellNum = headerRow.LastCellNum; 1143 for (int i = headerRow.FirstCellNum; i < headerCellNum; i++) 1144 { 1145 if (headerRow.GetCell(i) == null || headerRow.GetCell(i).StringCellValue.Trim() == "") 1146 { 1147 //如果标题行遇到空列，则不再向后继续读取 1148 headerCellNum = i + 1;//返回真实列数 1149 break; 1150 } 1151 } 1152 //T t = default(T); 1153 T t = new T(); 1154 PropertyInfo[] properties = typeof(T).GetProperties(); 1155 if (properties.Count() < headerCellNum) 1156 { 1157 throw new Exception("对象属性与工作表字段数量不符！"); 1158 } 1159 for (int i = headerRowIndex + 1; i < sheet.LastRowNum + 1; i++) 1160 { 1161 IRow row = sheet.GetRow(i); 1162 if (row != null && !string.IsNullOrEmpty(row.Cells[0].StringCellValue)) 1163 { 1164 t = Activator.CreateInstance<T>(); 1165 for (int j = row.FirstCellNum; j < headerCellNum; j++) 1166 { 1167 //如果碰到空cell，那么创建cell后赋空字符串 1168 var value = ValueType(properties[j].PropertyType, row.GetCellEx(j).ToString()); 1169 properties[j].SetValue(t, value, null); 1170 } 1171 list.Add(t); 1172 1173 } 1174 } 1175 } 1176 } 1177 catch (Exception ex) 1178 { 1179 list = null; 1180 throw new Exception(ex.Message); 1181 } 1182 return list; 1183 } 1184 /// <summary> 1185 /// Excel导入List 1186 /// </summary> 1187 /// <typeparam name="T">实体类型</typeparam> 1188 /// <param name="excelFilePath">excel文件路径</param> 1189 /// <param name="fields">实体属性的字符串表示形式的数组，顺序与excel字段保持一致</param> 1190 /// <param name="headerRowIndex">头部索引行</param> 1191 /// <returns></returns> 1192 public static IList<T> ImportFromExcel<T>(ISheet sheet, string[] fields, int headerRowIndex = 0) where T : class, new() 1193 { 1194 if (fields == null) throw new ArgumentNullException("fields", "参数不能为null!"); 1195 IList<T> list = new List<T>(); 1196 try 1197 { 1198 IRow headerRow = sheet.GetRow(0); 1199 int headerCellNum = headerRow.LastCellNum; 1200 for (int i = headerRow.FirstCellNum; i < headerCellNum; i++) 1201 { 1202 if (headerRow.GetCell(i) == null || headerRow.GetCell(i).StringCellValue.Trim() == "") 1203 { 1204 //如果标题行遇到空列，则不再向后继续读取 1205 headerCellNum = i + 1;//返回真实列数 1206 break; 1207 } 1208 } 1209 if (fields.Length != headerCellNum) 1210 { 1211 throw new Exception("指定的对象属性数量超过工作表字段数量！"); 1212 } 1213 //T t = default(T); 1214 T t = new T(); 1215 for (int i = headerRowIndex + 1; i < sheet.LastRowNum + 1; i++) 1216 { 1217 IRow row = sheet.GetRow(i); 1218 if (row != null && !string.IsNullOrEmpty(row.Cells[0].StringCellValue)) 1219 { 1220 t = Activator.CreateInstance<T>(); 1221 for (int j = 0; j < fields.Length; j++) 1222 { 1223 var property = typeof(T).GetProperty(fields[j]); 1224 //如果碰到空cell，那么创建cell后赋空字符串 1225 var value = ValueType(property.PropertyType, row.GetCellEx(j).ToString()); 1226 property.SetValue(t, value, null); 1227 } 1228 list.Add(t); 1229 } 1230 } 1231 } 1232 catch (Exception ex) 1233 { 1234 list = null; 1235 throw new Exception(ex.Message); 1236 } 1237 return list; 1238 } 1239 /// <summary> 1240 /// Excel导入List 1241 /// </summary> 1242 /// <typeparam name="T">实体类型</typeparam> 1243 /// <param name="excelFilePath">excel文件全路径</param> 1244 /// <param name="fields">实体属性的字符串表示形式的数组，顺序与excel字段保持一致</param> 1245 /// <param name="sheetName">工作表名</param> 1246 /// <param name="headerRowIndex">首行索引，默认0</param> 1247 /// <returns></returns> 1248 public static IList<T> ImportFromExcel<T>(string excelFilePath, string[] fields, string sheetName, int headerRowIndex = 0) where T : class, new() 1249 { 1250 if (string.IsNullOrEmpty(excelFilePath)) 1251 { 1252 excelFilePath = GetOpenFilePath(); 1253 } 1254 if (string.IsNullOrEmpty(excelFilePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 1255 FileStream fs = null; 1256 IWorkbook workbook = null; 1257 IList<T> list = null; 1258 try 1259 { 1260 using (fs = File.OpenRead(excelFilePath)) 1261 { 1262 bool isComPatible = IsCompatible(excelFilePath); 1263 workbook = CreateWorkbook(isComPatible, fs); 1264 list = ImportFromExcel<T>(workbook.GetSheet(sheetName), fields, headerRowIndex); 1265 } 1266 } 1267 catch (Exception ex) 1268 { 1269 workbook = null; 1270 if (fs != null) fs.Dispose(); 1271 list = null; 1272 throw new Exception(ex.Message); 1273 } 1274 return list; 1275 } 1276 /// <summary> 1277 /// Excel导入List 1278 /// </summary> 1279 /// <typeparam name="T">实体类型</typeparam> 1280 /// <param name="excelFilePath">excel文件全路径</param> 1281 /// <param name="fields">实体属性的字符串表示形式的数组，顺序与excel字段保持一致</param> 1282 /// <param name="sheetIndex">第几个工作表，默认值为1</param> 1283 /// <param name="headerRowIndex">首行索引，默认0</param> 1284 /// <returns></returns> 1285 public static IList<T> ImportFromExcel<T>(string excelFilePath, string[] fields, int sheetIndex = 1, int headerRowIndex = 0) where T : class, new() 1286 { 1287 if (string.IsNullOrEmpty(excelFilePath)) 1288 { 1289 excelFilePath = GetOpenFilePath(); 1290 } 1291 if (string.IsNullOrEmpty(excelFilePath)) throw new ArgumentNullException("excel文件路径为空字符串或null"); 1292 FileStream fs = null; 1293 IWorkbook workbook = null; 1294 IList<T> list = null; 1295 try 1296 { 1297 using (fs = File.OpenRead(excelFilePath)) 1298 { 1299 bool isComPatible = IsCompatible(excelFilePath); 1300 workbook = CreateWorkbook(isComPatible, fs); 1301 list = ImportFromExcel<T>(workbook.GetSheetAt(sheetIndex - 1), fields, headerRowIndex); 1302 } 1303 } 1304 catch (Exception ex) 1305 { 1306 workbook = null; 1307 if (fs != null) fs.Dispose(); 1308 list = null; 1309 throw new Exception(ex.Message); 1310 } 1311 return list; 1312 } 1313 #endregion 1314 #region 公共转换方法 1315 /// <summary> 1316 /// 将Excel的列索引转换为列名，列索引从0开始，列名从A开始。如第0列为A，第1列为B... 1317 /// </summary> 1318 /// <param name="index">列索引</param> 1319 /// <returns>列名，如第0列为A，第1列为B...</returns> 1320 public static string ConvertColumnIndexToColumnName(int index) 1321 { 1322 index++; 1323 int letterCount = 26; 1324 char[] array = new char[100]; 1325 int i = 0; 1326 while (index > 0) 1327 { 1328 int mod = index % letterCount; 1329 if (mod == 0) mod = letterCount; 1330 array[i++] = (char)(mod - 1 + 'A'); 1331 index = (index - 1) / 26; 1332 } 1333 StringBuilder sb = new StringBuilder(i); 1334 for (int j = i - 1; j >= 0; j--) 1335 { 1336 sb.Append(array[j]); 1337 } 1338 return sb.ToString(); 1339 } 1340 /// <summary> 1341 /// 转化日期 1342 /// </summary> 1343 /// <param name="date">日期</param> 1344 /// <returns></returns> 1345 public static DateTime ConvertDate(object date) 1346 { 1347 string dateString = (date ?? "").ToString(); 1348 DateTime dt = new DateTime(); 1349 if (DateTime.TryParse(dateString, out dt)) 1350 { 1351 return dt; 1352 } 1353 try 1354 { 1355 string spString = ""; 1356 if (dateString.Contains("-")) 1357 { 1358 spString = "-"; 1359 } 1360 else if (dateString.Contains("/")) 1361 { 1362 spString = "/"; 1363 } 1364 string[] time = dateString.Split(spString.ToCharArray()); 1365 int year = Convert.ToInt32(time[2]); 1366 int month = Convert.ToInt32(time[0]); 1367 int day = Convert.ToInt32(time[1]); 1368 string years = Convert.ToString(year); 1369 string months = Convert.ToString(month); 1370 string days = Convert.ToString(day); 1371 if (months.Length == 4) 1372 { 1373 dt = Convert.ToDateTime(date); 1374 } 1375 else 1376 { 1377 string rq = ""; 1378 if (years.Length == 1) 1379 { 1380 years = "0" + years; 1381 } 1382 if (months.Length == 1) 1383 { 1384 months = "0" + months; 1385 } 1386 if (days.Length == 1) 1387 { 1388 days = "0" + days; 1389 } 1390 rq = "20" + years + "-" + months + "-" + days; 1391 dt = Convert.ToDateTime(rq); 1392 } 1393 } 1394 catch 1395 { 1396 throw new Exception("日期格式不正确，转换日期失败！"); 1397 } 1398 return dt; 1399 } 1400 /// <summary> 1401 /// 转化数字 1402 /// </summary> 1403 /// <param name="d">数字字符串</param> 1404 /// <returns></returns> 1405 public static decimal ConvertDecimal(object d) 1406 { 1407 string dString = (d ?? "").ToString(); 1408 decimal result = 0m; 1409 if (decimal.TryParse(dString, out result)) 1410 { 1411 return result; 1412 } 1413 else 1414 { 1415 throw new Exception("数字格式不正确,转换数字失败!"); 1416 } 1417 } 1418 /// <summary> 1419 /// 转换布尔 1420 /// </summary> 1421 /// <param name="b">布尔值字符串</param> 1422 /// <returns></returns> 1423 public static bool ConvertBoolean(object b) 1424 { 1425 string bString = (b ?? "").ToString(); 1426 bool result = false; 1427 if (bool.TryParse(bString, out result)) 1428 { 1429 return result; 1430 } 1431 else if (bString == "0" || bString == "1") 1432 { 1433 return (bString == "0"); 1434 } 1435 else 1436 { 1437 throw new Exception("布尔格式不正确，转换布尔类型失败！"); 1438 } 1439 } 1440 /// <summary> 1441 /// 实体类属性类型与Excel字段类型的转换 1442 /// </summary> 1443 /// <param name="t"></param> 1444 /// <param name="value"></param> 1445 /// <returns></returns> 1446 public static object ValueType(Type t, string value) 1447 { 1448 object o = null; 1449 string strType = t.Name; 1450 if (strType == "Nullable`1") 1451 { 1452 strType = t.GetGenericArguments()[0].Name; 1453 } 1454 switch (strType) 1455 { 1456 case "Decimal": 1457 o = decimal.Parse(value); 1458 break; 1459 case "Int32": 1460 o = int.Parse(value); 1461 break; 1462 case "Float": 1463 o = float.Parse(value); 1464 break; 1465 case "DateTime": 1466 o = DateTime.Parse(value); 1467 break; 1468 case "Char": 1469 o = char.Parse(value); 1470 break; 1471 case "Boolean": 1472 if (new string[] { "0","1"}.Contains(value)) 1473 { 1474 o = Convert.ToBoolean(int.Parse(value)); 1475 } 1476 else 1477 { 1478 o = bool.Parse(value); 1479 } 1480 break; 1481 default: 1482 o = value; 1483 break; 1484 } 1485 return o; 1486 } 1487 #endregion 1488 1489 } 1490 }
扩展IRow的GetCell方法
1 using NPOI.SS.UserModel; 2 using System; 3 using System.Collections.Generic; 4 using System.Linq; 5 using System.Text; 6 7 namespace RaysUtil.Office.Excel 8 { 9 public static class NpoiEx 10 { 11 /// <summary> 12 /// 如果当前单元格为空，创建新的字符串类型的单元格 13 /// </summary> 14 /// <param name="row"></param> 15 /// <param name="index"></param> 16 /// <returns></returns> 17 public static ICell GetCellEx(this IRow row,int index) 18 { 19 return row.FirstOrDefault(n => n.ColumnIndex == index) ?? row.CreateCell(index,CellType.String); 20 } 21 } 22 }
样式类
1 using NPOI.HSSF.Util; 2 using NPOI.SS.UserModel; 3 using System; 4 using System.Collections.Generic; 5 using System.Linq; 6 using System.Text; 7 8 namespace RaysUtil.Office.Excel 9 { 10 //============================================================== 11 // 作者：* 12 // 时间：2018/1/6 21:06:18 13 // 文件名：CellStyleModel 14 // 版本：V1.0.1 15 // 说明： 16 // 修改者：** 17 // 修改说明： 分离出样式，单独写一个类 18 //============================================================== 19 public class CellStyleModel 20 { 21 /// <summary> 22 /// 是否存在下边框，默认true 23 /// </summary> 24 public bool BorderStyleB { get; set; } = true; 25 /// <summary> 26 /// 是否存在左边框，默认true 27 /// </summary> 28 public bool BorderStyleL { get; set; } = true; 29 /// <summary> 30 /// 是否存在右边框,默认true 31 /// </summary> 32 public bool BorderStyleR { get; set; } = true; 33 /// <summary> 34 /// 是否存在上边框,默认true 35 /// </summary> 36 public bool BorderStyleT { get; set; } = true; 37 /// <summary> 38 /// 有边框的样式,默认薄边框 39 /// </summary> 40 public BorderStyle BorderStyle { get; set; } = BorderStyle.Thin; 41 /// <summary> 42 /// 背景色 43 /// </summary> 44 public short ColorIndex { get; set; } = HSSFColor.LightGreen.Index; 45 /// <summary> 46 /// 是否横向对齐，默认True 47 /// </summary> 48 public bool IsAlignment { get; set; } = true; 49 /// <summary> 50 /// 横向对齐,默认横向居中 51 /// </summary> 52 public HorizontalAlignment HorizontalAlignment { get; set; } = HorizontalAlignment.Center; 53 /// <summary> 54 /// 垂直对齐，默认垂直居中 55 /// </summary> 56 public VerticalAlignment VerticalAlignment { get; set; } = VerticalAlignment.Center; 57 /// <summary> 58 /// 是否设置字体信息,默认False 59 /// </summary> 60 public bool IsSetFont { get; set; } = false; 61 /// <summary> 62 /// 字体信息,默认null 63 /// </summary> 64 public IFont Font { get; set; } = null; 65 /// <summary> 66 /// 字体大小，默认30 67 /// </summary> 68 public short FontSize { get; set; } = 30; 69 } 70 }
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