后台代码:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;public partial class temp : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection sqlCon;
SqlCommand sqlcom;
string strString = @"Data Source=237214A194D24DB\SQLEXPRESS;DataBase=Address;user id=sa;password=123";
sqlCon = new SqlConnection(strString);
string sqlString = "select * from addresslists";
sqlcom = sqlCon.CreateCommand();
sqlcom.CommandText = sqlString;
sqlCon.Open();
SqlDataReader dr = sqlcom.ExecuteReader();
GridView1.DataSource = dr;
GridView1.DataBind();
sqlCon.Close(); }
protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
{
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
{
CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
if (CheckBox2.Checked == true)
{
cbox.Checked = true;
}
else
{
cbox.Checked = false;
}
} }
}前台代码:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="temp.aspx.cs" Inherits="temp" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:CheckBox ID="CheckBox2" runat="server" OnCheckedChanged="CheckBox2_CheckedChanged" /></div>
</form>
</body>
</html>
为什么不能实现全选呢 点击 checkbox2没有反应
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;public partial class temp : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection sqlCon;
SqlCommand sqlcom;
string strString = @"Data Source=237214A194D24DB\SQLEXPRESS;DataBase=Address;user id=sa;password=123";
sqlCon = new SqlConnection(strString);
string sqlString = "select * from addresslists";
sqlcom = sqlCon.CreateCommand();
sqlcom.CommandText = sqlString;
sqlCon.Open();
SqlDataReader dr = sqlcom.ExecuteReader();
GridView1.DataSource = dr;
GridView1.DataBind();
sqlCon.Close(); }
protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
{
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
{
CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
if (CheckBox2.Checked == true)
{
cbox.Checked = true;
}
else
{
cbox.Checked = false;
}
} }
}前台代码:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="temp.aspx.cs" Inherits="temp" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:CheckBox ID="CheckBox2" runat="server" OnCheckedChanged="CheckBox2_CheckedChanged" /></div>
</form>
</body>
</html>
为什么不能实现全选呢 点击 checkbox2没有反应
{
for (var i=0;i <form1.elements.length;i++)
{
var e = form1.elements[i];
if (e.Name != "CheckBox2"&&e.disabled==false)
e.checked = form1.CheckBox2.checked; }
}
form1改为你的
<asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="true" OnCheckedChanged="CheckBox2_CheckedChanged" />
{
if (CheckBox2.Checked == true)
{
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
{
CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
cbox.Checked = true;
} }
else
{
cbox.Checked = false;
}
} }
}