网上有如下创建代码，但是好像没有写完整：
如下图的DataGrid表头 | 标题1 | 标题2
---|---
子标题1 | 子标题2
| |
在.net中可用如下的方法实现跨行合并DataGrid表头栏位：在DataGrid 的ItemCreate 事件中加入以下代码。
private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
if ( e.Item.ItemType == ListItemType.Header )
{
TableCellCollection tcl = e.Item.Cells;//获得表头元素的实例
tcl.Clear();//清除原有控件
tcl.Add( new TableHeaderCell() );//添加表头控件
tcl[0].RowSpan = 2; //定义表头的所占的行数
tcl[0].Text = " 标题1 ";
//下一行
tcl.Add( new TableHeaderCell() );
tcl[1].ColumnSpan = 2;
tcl[1].Text = " 标题2
子 标题1 | 子 标题2 ";
}
}
这里我有几个问题。
首先是如何调用到这个事件。
我如果直接在aspx.cs文件中给出以上代码，debug时根本不执行到这个事件
于是我在DataGrid中增加OnItemCreated=DataGrid1_ItemCreated,debug是系统会报错：“无法访问到这个事件，受保护什么的” 
不懂 
网上还有一个代码vb如下：
ShowColSpanHeader.aspx
1@ Page Language="vb" AutoEventWireup="false" Codebehind="ShowColSpanHeader.aspx.vb" Inherits="aspxWeb.mengxianhui.com.ShowColSpanHeader"
2``` |
3---|---
4| | |
5
6ShowColSpanHeader.aspx.vb
7
8Imports System Imports System.Data Imports System.Data.OleDb Public Class ShowColSpanHeader Inherits System.Web.UI.Page Protected WithEvents Table1 As System.Web.UI.HtmlControls.HtmlTable Protected WithEvents DataGrid1 As System.Web.UI.WebControls.DataGrid Protected WithEvents lucky_elove As HtmlControls.HtmlGenericControl #Region " Web Form Designer Generated Code " 'This call is required by the Web Form Designer. Private Sub InitializeComponent() End Sub Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles MyBase.Init 'CODEGEN: This method call is required by the Web Form Designer 'Do not modify it using the code editor. InitializeComponent() End Sub #End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles MyBase.Load lucky_elove.InnerText = "【孟宪会之精彩世界】 - 跨栏表头的实现" Table1.Rows(0).Cells(0).InnerText = "【孟宪会之精彩世界】.NET版本之最新文章" Table1.Rows(0).Cells(1).InnerText = "文章信息" Table1.Rows(1).Cells(0).InnerText = "文章标题" Table1.Rows(1).Cells(1).InnerText = "发布时间" Table1.Rows(1).Cells(2).InnerText = "所属栏目" Table1.Rows(1).Cells(3).InnerText = "点击率" Table1.Rows(0).Style.Add("color", "white") Table1.Rows(0).Style.Add("font-weight", "bold") Table1.Rows(0).Cells(0).Attributes.Add("onclick", _ "window.open('http://lucky_elove.www1.dotnetplayground.com/')") Table1.Rows(0).Cells(0).Style.Add("cursor", "hand") Try Dim cnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" _ \+ Server.MapPath("Test.mdb") Dim cn As New OleDbConnection(cnString) cn.Open() Dim strSQL As String = "SELECT TOP 20 D.Title,D.CreateDate,S.Title as pid,D.HitCount "_ \+ "FROM Document D INNER JOIN Subject S ON D.pid = S.id ORDER BY CreateDate DESC" Dim cmd As New OleDbCommand(strSQL, cn) DataGrid1.DataSource = cmd.ExecuteReader DataGrid1.DataBind() cn.Close() cn = Nothing Catch eOle As OleDbException Response.Write("产生错误：" + eOle.Message) End Try End Sub Private Sub DataGrid1_ItemDataBound(ByVal sender As Object, _ ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles DataGrid1.ItemDataBound If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then If e.Item.Cells(0).Text.Length > 26 Then e.Item.Cells(0).Attributes.Add("Title", e.Item.Cells(0).Text) e.Item.Cells(0).Text = e.Item.Cells(0).Text.Substring(0, 26) + "…" End If e.Item.Cells(1).Text=Format(System.Convert.ToDateTime(e.Item.Cells(1).Text),"yyyy年M月d日 h点m分s秒") End If End Sub End Class 我想要C#的啊。。。。。  