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GridView中添加一个CheckBox列

 

 1<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridView_CheckBoxColumn.aspx.cs" Inherits="GridSamples_GridView_CheckBoxColumn" %>
 2
 3<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 4
 5<html xmlns="http://www.w3.org/1999/xhtml" >
 6<head runat="server">
 7    <title>无标题页</title>
 8    <script language="javascript" type="text/javascript">
 9    function selectAll(obj)
10    {
11        var theTable  = obj.parentElement.parentElement.parentElement;
12        var i;
13        var j = obj.parentElement.cellIndex;
14        
15        for(i=0;i<theTable.rows.length;i++)
16        {
17            var objCheckBox = theTable.rows[i].cells[j].firstChild;
18            if(objCheckBox.checked!=null)objCheckBox.checked = obj.checked;
19        }
20    }
21    </script>
22</head>
23<body>
24    <form id="form1" runat="server">
25    <div>
26        <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
27            DataKeyNames="id" DataSourceID="AccessDataSource1" AllowSorting="True" OnDataBinding="GridView1_DataBinding" OnRowDataBound="GridView1_RowDataBound">
28            <Columns>
29                <asp:TemplateField>
30                    <ItemTemplate>
31                        <asp:CheckBox ID="CheckBox1" runat="server" Checked="True" Text='<%#DataBinder.Eval(Container.DataItem,"id") %>' />
32                    </ItemTemplate>
33                    <HeaderTemplate>
34                        &nbsp;<input id="CheckAll" type="checkbox" onclick="selectAll(this);" />本页全选
35                    </HeaderTemplate>
36                </asp:TemplateField>
37                <asp:BoundField DataField="id" HeaderText="id" InsertVisible="False" ReadOnly="True"
38                    SortExpression="id" />
39                <asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
40                <asp:BoundField DataField="sex" HeaderText="sex" SortExpression="sex" />
41                <asp:BoundField DataField="deptid" HeaderText="deptid" SortExpression="deptid" />
42            </Columns>
43        </asp:GridView>
44        &nbsp;
45      
46        <asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="~/App_Data/test.mdb"
47            SelectCommand="SELECT [id], [name], [sex], [deptid] FROM [employees]"></asp:AccessDataSource>
48        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="ShowAllSelectedItem" />
49        <asp:TextBox ID="TextBox1" runat="server" Width="200px"></asp:TextBox></div>
50    </form>
51</body>
52</html>
53

 1using System;
 2using System.Data;
 3using System.Configuration;
 4using System.Collections;
 5using System.Web;
 6using System.Web.Security;
 7using System.Web.UI;
 8using System.Web.UI.WebControls;
 9using System.Web.UI.WebControls.WebParts;
10using System.Web.UI.HtmlControls;
11
12public partial class GridSamples_GridView_CheckBoxColumn : System.Web.UI.Page
13{
14    /// <summary>
15    /// 获取或设置选中项的集合
16    /// </summary>
17    protected ArrayList SelectedItems
18    {
19        get
20        {
21            return (ViewState["mySelectedItems"] != null) ? (ArrayList)ViewState["mySelectedItems"] : null;
22        }
23        set
24        {
25            ViewState["mySelectedItems"] = value;
26        }
27    }
28
29    protected void Page_Load(object sender, EventArgs e)
30    {
31        
32    }
33
34
35    protected void GridView1_DataBinding(object sender, EventArgs e)
36    {
37        //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
38        CollectSelected();
39    }
40
41    
42    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
43    {
44        //这里的处理是为了回显之前选中的情况
45        if (e.Row.RowIndex > -1 && this.SelectedItems!=null)
46        {
47            DataRowView row = e.Row.DataItem as DataRowView;
48            CheckBox cb = e.Row.FindControl("CheckBox1") as CheckBox;
49            if(this.SelectedItems.Contains(row["id"].ToString()))
50                cb.Checked = true;
51            else
52                cb.Checked = false;
53        }
54    }
55    /// <summary>
56    /// 从当前页收集选中项的情况
57    /// </summary>
58    protected void CollectSelected()
59    {
60        ArrayList selectedItems = null;
61        if (this.SelectedItems == null)
62            selectedItems = new ArrayList();
63        else
64            selectedItems = this.SelectedItems;
65
66        for (int i = 0; i < this.GridView1.Rows.Count; i++)
67        {
68            string id = this.GridView1.Rows[i].Cells[1].Text;
69            CheckBox cb = this.GridView1.Rows[i].FindControl("CheckBox1") as CheckBox;
70            if (selectedItems.Contains(id) && !cb.Checked)
71                selectedItems.Remove(id);
72            if (!selectedItems.Contains(id) && cb.Checked)
73                selectedItems.Add(id);
74        }
75        this.SelectedItems = selectedItems;
76    }
77
78    protected void Button1_Click(object sender, EventArgs e)
79    {
80        //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
81        CollectSelected();
82
83        this.TextBox1.Text = string.Empty;
84        foreach (object tmp in this.SelectedItems)
85            this.TextBox1.Text += tmp.ToString() + ",";
86    }
87}
88
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posted on 2006-07-04 22:19 №.零零伍 阅读(11497) 评论(0)  编辑 收藏 网摘 所属分类: CSDN常见问题集
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