实现GridView里的checkbox 全选功能：(后台实现)

如何获取GridView中HeaderTemplate里面控件的值（附加checkbox全选功能）在头模版里有个CheckBox1，如何得到这个控件的值，事件由控件CheckBox1来AutoPostBack

(!!!!!!!!!)

CheckBox cbAll = (CheckBox) GridView1.HeaderRow.FindControl("CheckBox1");

实现GridView1里的checkbox 全选功能：(后台实现)

后台代码

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 (((CheckBox)GridView1.HeaderRow.FindControl("CheckBox2")).Checked == true)

{

cbox.Checked = true;

}

else

{

cbox.Checked = false;

}

}

}

前台代码

<asp:GridView ID="GridView1" runat="server" CaptionAlign="Top" CellPadding="4"

AutoGenerateColumns="False" ForeColor="Black" Width="100%" BackColor="#BBBBBB"

>

<AlternatingRowStyle BackColor="White" />

<Columns>

<asp:TemplateField>

<HeaderTemplate>

全选<asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="true"

oncheckedchanged="CheckBox2_CheckedChanged" />

</HeaderTemplate>

<ItemTemplate>

<asp:CheckBox ID="CheckBox1" runat="server" />

</ItemTemplate>

</asp:TemplateField>