为DataGrid添加确认删除的对话框（1）
来源：互联网 发布：安卓网络电视直播软件 编辑：程序博客网 时间：2024/06/06 13:59
在删除数据前进行确认是一个非常友好的做法。在本文里，我们就讨论利用TemplateColumn和Button服务端控件实现这种功能的方法。
DeleteIt.aspx
<![CDATA[<%@ Page Language="vb" AutoEventWireup="false" Codebehind="DeleteIt.aspx.vb" Inherits="aspxWeb.DeleteIt"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML> <HEAD> <title>WebForm1</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> </asp:label> <form runat="server" ID="Form1"> <Columns> <ItemTemplate> </asp:Button> </ItemTemplate> </asp:TemplateColumn> </asp:BoundColumn> </asp:BoundColumn> </Columns> </asp:DataGrid> </form> </body></HTML>]]>后代码：DeleteIt.aspx.vb
<![CDATA[Imports System.WebImports System.CollectionsImports SystemImports System.DataImports System.Data.OleDbImports System.Web.UI.WebControlsPublic Class DeleteIt 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 Sub Page_Load(ByVal Sender As Object, ByVal e As EventArgs) Handles MyBase.Load myDataGrid.HeaderStyle.Font.Bold = True myDataGrid.HeaderStyle.HorizontalAlign = HorizontalAlign.Center myDataGrid.Columns(0).HeaderText = "操作" myDataGrid.Columns(1).HeaderText = "标题" myDataGrid.Columns(2).HeaderText = "发布日期" If Not IsPostBack Then Dim strCn As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("Test.mdb") Dim strSql As String strSql = "SELECT Top 15 objectGuid,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 End Sub Sub DataGrid_ItemCreated(ByVal Sender As Object, ByVal e As DataGridItemEventArgs)_ Handles myDataGrid.ItemCreated Select Case e.Item.ItemType Case ListItemType.Item, ListItemType.AlternatingItem, ListItemType.EditItem Dim myDeleteButton As Button myDeleteButton = e.Item.FindControl("btnDelete") myDeleteButton.Text = "删除此行" myDeleteButton.Attributes.Add("onclick", "return confirm('您真的要删除第 "_ + e.Item.ItemIndex.ToString + " 行吗？');") End Select End Sub Private Sub myDataGrid_ItemCommand(ByVal source As Object, _ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs)_ Handles myDataGrid.ItemCommand Response.Write("您要删除的是：<font color=red>" + e.Item.Cells(1).Text + "</font>") e.Item.BackColor = System.Drawing.Color.Ivory End SubEnd Class]]>
