请教各位:如何控制checkbox,选中一个时,其余的不选中?
gong1 2003-09-21 11:30:38 我动态添加了一个checkbox控件,放在datagrid中。
如何才能只选中一个,其余的不选中?
代码如下:
<%@ Page language="c#" Codebehind="Display.aspx.cs" AutoEventWireup="false" Inherits="web1.Stduselect.Display" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
<meta content="Microsoft Visual Studio 7.0" name="GENERATOR">
<meta content="C#" 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" Font-Size="9pt">
<form id="WebForm1" method="post" runat="server">
<FONT face="宋体">
<asp:datagrid id="DataGrid1" style="Z-INDEX: 101; LEFT: 58px; POSITION: absolute; TOP: 28px" runat="server" Width="501px" Height="124px" AutoGenerateColumns="False" Font-Size="9pt" AllowPaging="True">
<ItemStyle Font-Size="9pt"></ItemStyle>
<Columns>
<asp:BoundColumn DataField="kcmc" HeaderText="课程名称">
<HeaderStyle Wrap="False"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="kcxf" HeaderText="学分">
<HeaderStyle Wrap="False"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="XM" HeaderText="教师姓名">
<HeaderStyle Wrap="False"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="JSMC" HeaderText="上课地点">
<HeaderStyle Wrap="False"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="ZRS" HeaderText="总人数">
<HeaderStyle Wrap="False"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="YXRS" HeaderText="已选人数">
<HeaderStyle Wrap="False"></HeaderStyle>
</asp:BoundColumn>
<asp:TemplateColumn HeaderText="选择">
<HeaderStyle Wrap="False" HorizontalAlign="Center" Width="50px"></HeaderStyle>
<ItemStyle Wrap="False"></ItemStyle>
<ItemTemplate>
<asp:CheckBox id="chkExport" Runat="server"></asp:CheckBox>
</ItemTemplate>
<FooterStyle Wrap="False"></FooterStyle>
<EditItemTemplate>
<asp:CheckBox id="chkExportON" Runat="server" Enabled="true" OnCheckedChanged="CountItem"></asp:CheckBox>
</EditItemTemplate>
</asp:TemplateColumn>
</Columns>
<PagerStyle HorizontalAlign="Right" Position="TopAndBottom" Mode="NumericPages"></PagerStyle>
</asp:datagrid>
<asp:Button id="Button1" style="Z-INDEX: 102; LEFT: 314px; POSITION: absolute; TOP: 331px" runat="server" Text="Button"></asp:Button></FONT></form>
</body>
</HTML>
隐藏代码如下:
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
namespace web1.Stduselect
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class Display : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button Button1;
protected System.Web.UI.WebControls.DataGrid DataGrid1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if(!IsPostBack)
{
BindGrid();
//CountItem();
}
}
private void BindGrid()
{
SqlConnection myConnection=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"]);
DataSet ds=new DataSet();
SqlDataAdapter adapter=new SqlDataAdapter("select * from Edu_elective",myConnection);
adapter.Fill(ds,"Edu_elective");
DataGrid1.DataSource=ds.Tables["Edu_elective"].DefaultView;
DataGrid1.DataBind();
}
public void CountItem(object sender,System.EventArgs e)
{
for(int i=0;i<DataGrid1.Items.Count;i++)
{
if(((CheckBox)DataGrid1.Items[i].Cells[6].Controls[1]).Checked)
{
Response.Write("sdfadfs*");
//Response.Write(((TextBox)DataGrid1.Items[1].Cells[].Controls[1]).Text);
}
}
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN:该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_Click(object sender, System.EventArgs e)
{
}
}
}