GridView中全选和反选

1. 带回发 

   

GridView中贴：
<asp:TemplateField FooterStyle-HorizontalAlign="Center">
                          <ItemTemplate>
                            <asp:CheckBox ID="chk_ItemAll" runat="server" />
                        </ItemTemplate>
                         <HeaderTemplate>
                            <asp:CheckBox ID="chk_HeadAll" runat="server"  OnCheckedChanged="SelectAll" AutoPostBack="true"/>
                         </HeaderTemplate>
                     </asp:TemplateField> 
后台贴：
 protected void SelectAll(object sender, EventArgs e)
        {
            bool isChecked = ((CheckBox)(grd_SMSNumberSet.HeaderRow.Cells[0].FindControl("chk_HeadAll"))).Checked;
            foreach (GridViewRow gvRow in grd_SMSNumberSet.Rows)
            {
                ((CheckBox)(gvRow.Cells[0].FindControl("chk_ItemAll"))).Checked = isChecked;
            }
        }