c#中为datagrid添加下拉列表框_c#应用

2008-02-23 05:44:35来源:互联网 阅读 ()

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  本文将介绍如何在 System.Windows.Forms.DataGrid中切入使用ComboBox控件,主要包括三方面的内容。

  1. 在DataGrid中加入ComboBox列;

  2. 把在DataGrid中的修改保存到对应的网格;
 
  3. 配置DataGrid中网格的焦点。

  下面是整个源代码,一些功能能够看注释。

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace DataGridTest
{
 public class Form1 : System.Windows.Forms.Form
 {
  private System.Windows.Forms.DataGrid dgdFunctionArea;
  private DataTable dtblFunctionalArea;
  private System.Windows.Forms.Button buttonFocus;
  private System.ComponentModel.Container components = null;

  public Form1()
  {
   InitializeComponent();
   PopulateGrid();
  }

  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

  #region Windows 窗体设计器生成的代码

  private void InitializeComponent()
  {
   this.dgdFunctionArea = new System.Windows.Forms.DataGrid();
   this.buttonFocus = new System.Windows.Forms.Button();
   ((System.ComponentModel.ISupportInitialize)(this.dgdFunctionArea)).BeginInit();
   this.SuspendLayout();
   //
   // dgdFunctionArea
   //
   this.dgdFunctionArea.DataMember = "";
   this.dgdFunctionArea.HeaderForeColor = System.Drawing.SystemColors.ControlText;

   this.dgdFunctionArea.Location = new System.Drawing.Point(4, 8);
   this.dgdFunctionArea.Name = "dgdFunctionArea";
   this.dgdFunctionArea.Size = new System.Drawing.Size(316, 168);
   this.dgdFunctionArea.TabIndex = 0;
   //
   // buttonFocus
   //
   this.buttonFocus.Location = new System.Drawing.Point(232, 188);
   this.buttonFocus.Name = "buttonFocus";
   this.buttonFocus.Size = new System.Drawing.Size(84, 23);
   this.buttonFocus.TabIndex = 1;
   this.buttonFocus.Text = "获取焦点";
   this.buttonFocus.Click = new System.EventHandler(this.buttonFocus_Click);
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(332, 217);
   this.Controls.Add(this.buttonFocus);
   this.Controls.Add(this.dgdFunctionArea);
   this.Name = "Form1";
   this.Text = "Form1";
   ((System.ComponentModel.ISupportInitialize)(this.dgdFunctionArea)).EndInit();
   this.ResumeLayout(false);

  }
  #endregion
  /// <summary>
  /// 应用程式的主入口点。
  /// </summary>
  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }
  //初始化DataGrid
  private void PopulateGrid()
  {
   //创建一个DataTable对象,包括四列,前三列为String,最后一列为Boolean。
   dtblFunctionalArea = new DataTable ("FunctionArea");
   string[] arrstrFunctionalArea = new string [3]{"Functional Area","Min","Max"};
   DataColumn dtCol = null;
   //创建String列
   for(int i=0; i< 3;i )
   {
    dtCol = new DataColumn(arrstrFunctionalArea[i]);
    dtCol.DataType = Type.GetType("System.String");
    dtCol.DefaultValue = "";
    dtblFunctionalArea.Columns.Add(dtCol);
   }

   //创建Boolean列,用CheckedBox来显示。
   DataColumn dtcCheck = new DataColumn("IsMandatory");
   dtcCheck.DataType = System.Type.GetType("System.Boolean");
   dtcCheck.DefaultValue = false;
   dtblFunctionalArea.Columns.Add(dtcCheck);

   //把表绑定到DataGrid
   dgdFunctionArea.DataSource = dtblFunctionalArea;

   //为DataGrid加载DataGridTableStyle样式
   if(!dgdFunctionArea.TableStyles.Contains("FunctionArea"))
   {
    DataGridTableStyle dgdtblStyle = new DataGridTableStyle();
    dgdtblStyle.MappingName = dtblFunctionalArea.TableName;
    dgdFunctionArea.TableStyles.Add(dgdtblStyle);
    dgdtblStyle.RowHeadersVisible = false;
    dgdtblStyle.HeaderBackColor = Color.LightSteelBlue;
    dgdtblStyle.AllowSorting = false;
    dgdtblStyle.HeaderBackColor = Color.FromArgb(8,36,107);
    dgdtblStyle.RowHeadersVisible = false;
    dgdtblStyle.HeaderForeColor = Color.White;
    dgdtblStyle.HeaderFont = new System.Drawing.Font("Microsoft Sans Serif", 9F,
    System.Drawing.FontStyle.Bold,
    System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
    dgdtblStyle.GridLineColor = Color.DarkGray;
    dgdtblStyle.PreferredRowHeight = 22;
    dgdFunctionArea.BackgroundColor = Color.White;

    //配置列的宽度
    GridColumnStylesCollection colStyle = dgdFunctionArea.TableStyles[0].GridColumnStyles;

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