<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridView_CheckBoxColumn.aspx.cs" Inherits="GridSamples_GridView_CheckBoxColumn" %>
<!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>
<script language="javascript" type="text/javascript">
function selectAll(obj)
{
var theTable = obj.parentElement.parentElement.parentElement;
var i;
var j = obj.parentElement.cellIndex;
for(i=0;i<theTable.rows.length;i++)
{
var objCheckBox = theTable.rows[i].cells[j].firstChild;
if(objCheckBox.checked!=null)objCheckBox.checked = obj.checked;
}
}
</script>
</head>
<body>
<form >************************************
************************************
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;
public partial class GridSamples_GridView_CheckBoxColumn : System.Web.UI.Page
{
/// <summary>
/// 获取或设置选中项的集合
/// </summary>
protected ArrayList SelectedItems
{
get
{
return (ViewState["mySelectedItems"] != null) ? (ArrayList)ViewState["mySelectedItems"] : null;
}
set
{
ViewState["mySelectedItems"] = value;
}
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void GridView1_DataBinding(object sender, EventArgs e)
{
//在每一次重新绑定之前，需要调用CollectSelected方法从当前页收集选中项的情况
CollectSelected();
}
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
//这里的处理是为了回显之前选中的情况
if (e.Row.RowIndex > -1 && this.SelectedItems!=null)
{
DataRowView row = e.Row.DataItem as DataRowView;
CheckBox cb = e.Row.FindControl("CheckBox1") as CheckBox;
if(this.SelectedItems.Contains(row["id"].ToString()))
cb.Checked = true;
else
cb.Checked = false;
}
}
/// <summary>
/// 从当前页收集选中项的情况
/// </summary>
protected void CollectSelected()
{
ArrayList selectedItems = null;
if (this.SelectedItems == null)
selectedItems = new ArrayList();
else
selectedItems = this.SelectedItems;
for (int i = 0; i < this.GridView1.Rows.Count; i++)
{
string id = this.GridView1.Rows[i].Cells[1].Text;
CheckBox cb = this.GridView1.Rows[i].FindControl("CheckBox1") as CheckBox;
if (selectedItems.Contains(id) && !cb.Checked)
selectedItems.Remove(id);
if (!selectedItems.Contains(id) && cb.Checked)
selectedItems.Add(id);
}
this.SelectedItems = selectedItems;
}
protected void Button1_Click(object sender, EventArgs e)
{
//最后，需要对选中项进行操作之前，不能忘了还要最后一次收集当前页的选中情况
CollectSelected();
this.TextBox1.Text = string.Empty;
foreach (object tmp in this.SelectedItems)
this.TextBox1.Text += tmp.ToString() + ",";
}
}