c# gridview 排序及分页_c#应用

2008-02-23 05:42:13来源:互联网 阅读 ()

新老客户大回馈,云服务器低至5折

假如您在GridView控件上配置 AllowPaging="true" or AllowSorting="true" 而没有使用使用数据源控件 DataSource (i.e. SqlDataSource, ObjectDataSource),运行则会出现下列错误:

当您在GridView控件上单击下一页时:

The GridView GridViewID fired event PageIndexChanging which wasnt handled.

当您点击排序时,则回出现:

The GridView GridViewID fired event Sorting which wasnt handled.

假如您没有配置GridView的DataSourceID 的属性,您必须添加一个操作才能够排序及分页。。


点这里查看下面的例子

<%@ Page Language="C#" %>

<%@ Import Namespace="System.Data" %>

<%@ Import Namespace="System.Data.OleDb" %>

<script runat="server">

private void PopulatePublishersGridView()

{

string connectionString = AccessConnectionString();

OleDbConnection accessConnection = new OleDbConnection(connectionString);

string sqlQuery = "SELECT [PubID], [Name], [Company Name], [Address], [City], [State], [Zip], [Telephone], [Fax], [Comments] FROM Publishers ORDER BY [Name] ASC;";

OleDbCommand accessCommand = new OleDbCommand(sqlQuery, accessConnection);

OleDbDataAdapter publishersDataAdapter = new OleDbDataAdapter(accessCommand);

DataTable publishersDataTable = new DataTable("Publishers");

publishersDataAdapter.Fill(publishersDataTable);

int dataTableRowCount = publishersDataTable.Rows.Count;

if (dataTableRowCount > 0)

{

gridViewPublishers.DataSource = publishersDataTable;

gridViewPublishers.DataBind();

}

}

private string AccessConnectionString()

{

string accessDatabasePath = Server.MapPath("~/App_Data/biblio.mdb");

return String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};", accessDatabasePath);

}

private string GridViewSortDirection

{

get { return ViewState["SortDirection"] as string ?? "ASC"; }

set { ViewState["SortDirection"] = value; }

}

private string GridViewSortExpression

{

get { return ViewState["SortExpression"] as string ?? string.Empty; }

set { ViewState["SortExpression"] = value; }

}

private string GetSortDirection()

{

switch (GridViewSortDirection)

{

case "ASC":

GridViewSortDirection = "DESC";

break;

case "DESC":

GridViewSortDirection = "ASC";

break;

}

return GridViewSortDirection;

}

protected void gridViewPublishers_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

gridViewPublishers.DataSource = SortDataTable(gridViewPublishers.DataSource as DataTable, true);

gridViewPublishers.PageIndex = e.NewPageIndex;

gridViewPublishers.DataBind();

}

protected DataView SortDataTable(DataTable dataTable, bool isPageIndexChanging)

{

if (dataTable != null)

{

DataView dataView = new DataView(dataTable);

if (GridViewSortExpression != string.Empty)

{

if (isPageIndexChanging)

{

dataView.Sort = string.Format("{0} {1}", GridViewSortExpression, GridViewSortDirection);

}

else

{

dataView.Sort = string.Format("{0} {1}", GridViewSortExpression, GetSortDirection());

}

}

return dataView;

}

else

{

return new DataView();

}

}

protected void gridViewPublishers_Sorting(object sender, GridViewSortEventArgs e)

{

GridViewSortExpression = e.SortExpression;

int pageIndex = gridViewPublishers.PageIndex;

gridViewPublishers.DataSource = SortDataTable(gridViewPublishers.DataSource as DataTable, false);

gridViewPublishers.DataBind();

gridViewPublishers.PageIndex = pageIndex;

}

protected void Page_Load(object sender, EventArgs e)

{

PopulatePublishersGridView();

}

</script>


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

标签:

版权申明:本站文章部分自网络,如有侵权,请联系:west999com@outlook.com
特别注意:本站所有转载文章言论不代表本站观点,本站所提供的摄影照片,插画,设计作品,如需使用,请与原作者联系,版权归原作者所有

上一篇: 对c#委托及事件委托的理解_c#应用

下一篇: radiobox、checkbox和validating事件的相关处理 _c#应用