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="<a href='http://dev.chinaitzhe.com/java/' target=_blank>Java</a>Script" name="vs_defaultClientScript"> <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema"> </HEAD> <body MS_POSITIONING="GridLayout"> <asp:label id="Label1" runat="Server"></asp:label> <form id="Form1" runat="server"> <asp:datagrid id="myDataGrid" runat="server" AutoGenerateColumns="True" DataKeyField="Title"> <Columns> <asp:ButtonColumn CommandName="Delete" ButtonType="PushButton" /> </Columns> </asp:datagrid> </form> </body></HTML>]]>后代码DeteleIt3.aspx.vb
<![CDATA[Imports System.WebImports System.DataImports System.Data.OleDbPublic 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 SubEnd Class]]>
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