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”
网上还有一个代码vb如下：
ShowColSpanHeader.aspx
ShowColSpanHeader.aspx.vb
Imports 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。。。。。
