为DataGrid添加CheckBox控件-控件新闻-慧都网

为DataGrid添加CheckBox控件

翻译|其它|编辑：郝浩|2005-04-01 09:42:00.000|阅读 1396 次

概述：

查看例子

CheckBoxDataGrid.aspx

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="CheckBoxDataGrid.aspx.vb"
Inherits="aspxWeb.CheckBoxDataGrid" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
    <title>为DataGrid添加CheckBox控件的例子</title>
    <meta name="GENERATOR" content="Microsoft Visual Studio.NET 7.0">
    <meta name="CODE_LANGUAGE" content="Visual Basic 7.0">
    <meta name="vs_defaultClientScript" content="JavaScript">
    <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="frmMain" method="post" runat="server">
    <asp:DataGrid id="dgMain" runat="server" Width="98%" AutoGenerateColumns="False">
      <SelectedItemStyle Font-Size="9pt" Font-Names="宋体"></SelectedItemStyle>
      <EditItemStyle Font-Size="9pt" Font-Names="宋体" Font-Bold="True" ForeColor="Red"   BackColor="Info"/>
     <AlternatingItemStyle Font-Size="9pt" Font-Names="宋体" ForeColor="ControlText" BackColor="White"/>
     <ItemStyle Font-Size="9pt" Font-Names="宋体" ForeColor="ControlText" BackColor="WhiteSmoke"/>
    <HeaderStyle Font-Bold="True" HorizontalAlign="Center" ForeColor="Black"
VerticalAlign="Middle" BackColor="Control">
    </HeaderStyle>
<Columns>
    <asp:TemplateColumn HeaderText="操作">
    <HeaderStyle HorizontalAlign="Center" Width="50px"></HeaderStyle>
    <ItemTemplate>
    <asp:CheckBox ID="chkExport" Runat="server" />
</ItemTemplate>
   <EditItemTemplate>
   <asp:CheckBox ID="chkExportON" Runat="server" Enabled="true" />
   </EditItemTemplate>
   </asp:TemplateColumn>
<asp:BoundColumn DataField="id" ReadOnly="True" HeaderText="序号">
   <HeaderStyle Width="50px"></HeaderStyle>
    </asp:BoundColumn>
      <asp:TemplateColumn SortExpression="demo" HeaderText="标题">
        <ItemTemplate>
        <asp:Label Text='<%# Server.HTMLEncode(DataBinder.Eval(Container.DataItem, "Title"))%>'
           runat="server"Width="80%" ID="lblColumn"/>
        </ItemTemplate>
        </asp:TemplateColumn>
     </Columns>
    </asp:DataGrid>
<asp:Button id="cmdSelectAll" runat="server" Text="全部选中"></asp:Button>
<asp:Button id="cmdFindSelected" runat="server" Text="查看选中的项目"></asp:Button>
<br>
<asp:Label id="Label1" runat="server"></asp:Label>
</form>
</body>
</HTML>

后代码 CheckBoxDataGrid.aspx.vb

Imports System.Data
Imports System.Data.OleDb
Public Class CheckBoxDataGrid
Inherits System.Web.UI.Page
Protected WithEvents cmdSelectAll As System.Web.UI.WebControls.Button
Protected WithEvents dgMain As System.Web.UI.WebControls.DataGrid
Protected WithEvents cmdFindSelected As System.Web.UI.WebControls.Button
Dim oDataView As DataView
Protected WithEvents Label1 As System.Web.UI.WebControls.Label
Dim sConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="_
+ Server.MapPath("Test.mdb")

#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
    <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: 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
'Put user code to initialize the page here
    dgMain.Columns(0).HeaderText = "选项"
    dgMain.Columns(1).HeaderText = "序号"
    dgMain.Columns(2).HeaderText = "标题"
   cmdFindSelected.Text = "查看选中的项目"
      RefreshGrid()
   If Not Page.IsPostBack Then
     cmdSelectAll.Text = "全部选中"
     dgMain.DataBind()
   End If
End Sub

#Region "处理多选"
Private Sub cmdSelectAll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)_
Handles cmdSelectAll.Click
   selectAll()
    End Sub
   Private Sub selectAll()
   Dim oDataGridItem As DataGridItem
   Dim chkExport As System.Web.UI.WebControls.CheckBox
     If cmdSelectAll.Text = "全部选中" Then
         For Each oDataGridItem In dgMain.Items
     chkExport = oDataGridItem.FindControl("chkExport")
   chkExport.Checked = True
Next
   cmdSelectAll.Text = "全部不选"
    Else
     For Each oDataGridItem In dgMain.Items
      chkExport = oDataGridItem.FindControl("chkExport")
    chkExport.Checked = False
Next
    cmdSelectAll.Text = "全部选中"
   End If
End Sub
#End Region
#Region "更新DataGrid"
   Private Sub RefreshGrid()
   Dim oConnection As OleDbConnection
   Dim oCommand As OleDbDataAdapter
   Dim oDataSet As New DataSet()
   Try
   Dim sSQL As String = "Select top 5 * from TestTable order by id"
     oConnection = New OleDbConnection(sConnectionString)
     oCommand = New OleDbDataAdapter(sSQL.ToString, oConnection)
     oCommand.Fill(oDataSet, "TestTable")
     oDataView = New DataView(oDataSet.Tables("TestTable"))
     dgMain.DataSource = oDataView
     oConnection.Close()
     Catch ex As Exception
       '// Place Error Handling here
      End Try
   End Sub
#End Region
Private Sub cmdFindSelected_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)_
   Handles cmdFindSelected.Click
    Dim oDataGridItem As DataGridItem
    Dim chkExport As System.Web.UI.WebControls.CheckBox
    Dim oExArgs As New System.Collections.ArrayList()
    Dim sID As String
   Label1.Text = ""
     For Each oDataGridItem In dgMain.Items
      chkExport = oDataGridItem.FindControl("chkExport")
   If chkExport.Checked Then
      Label1.Text = ""
         sID = CType(oDataGridItem.FindControl("lblColumn"), Label).Text
        oExArgs.Add(sID)
           Dim i As Integer = 0
         For i = 0 To oExArgs.Count - 1
       Label1.Text += oExArgs(i) + ","
    Next
End If
Next
End Sub
End Class
　