在DataGrid里添加确认删除的对话框，第三个办法就是利用Page对象的RegisterOnSubmitStatement方法。Page.RegisterOnSubmitStatement方法能够使页面能够访问客户端 OnSubmit 事件。脚本应该是注册在其他地方的对客户端代码的函数调用。
源代码如下：
DeleteIt3.aspx
<![CDATA[
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="DeteleIt3.aspx.vb" Inherits="aspxWeb.DeteleIt3"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>DeteleIt3</title>
<meta content="Microsoft Visual Studio .NET 7.0" name="GENERATOR">
<meta content="Visual Basic 7.0" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
</HEAD>
<body MS_POSITIONING="GridLayout">
</asp:label>
<form id="Form1" runat="server">
<Columns>
</Columns>
</asp:datagrid>
</form>
</body>
</HTML>
]]>
后代码DeteleIt3.aspx.vb
<![CDATA[
Imports System.Web
Imports System.Data
Imports System.Data.OleDb
Public Class DeteleIt3
Inherits System.Web.UI.Page
Protected WithEvents Label1 As System.Web.UI.WebControls.Label
Protected WithEvents myDataGrid As System.Web.UI.WebControls.DataGrid
#Region " Web 窗体设计器生成的代码 "
'该调用是 Web 窗体设计器所必需的。
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
End Sub
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: 此方法调用是 Web 窗体设计器所必需的
'不要使用代码编辑器修改它。
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码
If Not IsPostBack Then
Dim strCn As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("Test.mdb")
Dim strSql As String = "SELECT Top 15 Title,CreateDate FROM Document Order By CreateDate Desc"
Dim cn As New OleDbConnection(strCn)
cn.Open()
Dim cmd As New OleDbCommand(strSql, cn)
myDataGrid.DataSource = cmd.ExecuteReader(CommandBehavior.CloseConnection)
myDataGrid.DataBind()
cmd.Dispose()
cmd = Nothing
cn.Close()
cn.Dispose()
cn = Nothing
End If
Page.RegisterOnSubmitStatement("OnSubmit", "{return confirm('您真的要删除此行吗？？') } ")
End Sub
Sub myDataGrid_ItemCreated(ByVal sender As Object, _
ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles myDataGrid.ItemCreated
Select Case e.Item.ItemType
Case ListItemType.Item, ListItemType.AlternatingItem, ListItemType.EditItem
Dim myTableCell As TableCell
myTableCell = e.Item.Cells(0)
Dim myDeleteButton As Button
myDeleteButton = myTableCell.Controls(0)
myDeleteButton.Text = "删除此行"
Case ListItemType.Header
e.Item.Font.Bold = True
e.Item.HorizontalAlign = HorizontalAlign.Center
e.Item.BackColor = System.Drawing.Color.Ivory
e.Item.Cells(0).Text = "操作"
e.Item.Cells(1).Text = "文章标题"
e.Item.Cells(2).Text = "发布日期"
End Select
End Sub
Private Sub myDataGrid_DeleteCommand(ByVal source As Object, _
ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles myDataGrid.DeleteCommand
Label1.Text = "您删除的是：<font color=red>" + myDataGrid.DataKeys(CInt(e.Item.ItemIndex)) + "</font>"
e.Item.BackColor = System.Drawing.Color.Tomato
End Sub
End Class
]]>
