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  • GridView中实现CheckBox的全选

    用服务器端的方法:
    在页面上放一个gridview控件,配置好数据源,编辑列,添加一个模版列,再编辑模版,放入一个checkbox控件。代码如下:

    <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
            DataKeyNames="AreaID" DataSourceID="SqlDataSource1">
            <Columns>
                <asp:BoundField DataField="AreaID" HeaderText="AreaID" ReadOnly="True" SortExpression="AreaID" />
                <asp:BoundField DataField="CityID" HeaderText="CityID" SortExpression="CityID" />
                <asp:TemplateField>
                    <HeaderTemplate>
                        <asp:CheckBox ID="chkAll" runat="server" AutoPostBack="True" 
    OnCheckedChanged="chkAll_CheckedChanged" />
                    </HeaderTemplate>
                    <ItemTemplate>
                        <asp:CheckBox ID="chkItem" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

    后台cs代码:

    protected void chkAll_CheckedChanged(object sender, EventArgs e)
    {
        for (int i = 0; i < this.GridView1.Rows.Count; i++)
        {
            ((CheckBox)GridView1.Rows[i].FindControl("chkItem")).Checked = 
                ((CheckBox)this.GridView1.HeaderRow.FindControl("chkAll")).Checked;
        }
    }

    用脚本实现:

    <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
            DataKeyNames="AreaID" DataSourceID="SqlDataSource1">
            <Columns>
                <asp:BoundField DataField="AreaID" HeaderText="AreaID" ReadOnly="True" 
    SortExpression="AreaID" />
                <asp:BoundField DataField="CityID" HeaderText="CityID" SortExpression="CityID" />
                <asp:TemplateField>
                    <HeaderTemplate>
                        <input id="chkAll"  onclick="SelectAll(this)"; type=checkbox>
                    </HeaderTemplate>
                    <ItemTemplate>
                        <input id="chkItem" type=checkbox>                
                     </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

    再客户端写javascript

    function SelectAll(chkbox)
    {
       var box=chkbox;
       state=theBox.checked;    
       elem=box.form.elements;
       for(i=0;i<elem.length;i++)
       if(elem[i].type=="checkbox" && elem[i].id!=box.id)
        {
             if(elem[i].checked!=state)
             {
                elem[i].click();
             }
        }
     }
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  • 原文地址:https://www.cnblogs.com/oec2003/p/954798.html
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