DataGrid中打勾全部选中的方法

html代码

<asp:datagrid id="dgUserList" runat="server" Width="640px" BorderColor="White" PagerStyle-HorizontalAlign="Right"
                 AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False">
                 <AlternatingItemStyle BackColor="#F5F5F5"></AlternatingItemStyle>
                 <ItemStyle HorizontalAlign="Center"></ItemStyle>
                 <HeaderStyle HorizontalAlign="Center" ForeColor="White" BackColor="#4A95FD" Height="8"></HeaderStyle>
                 <PagerStyle HorizontalAlign="Right" Mode="NumericPages"></PagerStyle>
                 <Columns>
                  <asp:TemplateColumn>
                   <HeaderTemplate>
                    <asp:CheckBox id="chkAll" runat="server"></asp:CheckBox>
                   </HeaderTemplate>
                   <ItemTemplate>
                    <asp:CheckBox id="chkItem" runat="server"></asp:CheckBox>
                   </ItemTemplate>
                  </asp:TemplateColumn>
                  <asp:BoundColumn DataField="id" HeaderText="序号"></asp:BoundColumn>
                  <asp:BoundColumn DataField="username" HeaderText="用户名"></asp:BoundColumn>
                  <asp:BoundColumn DataField="workno" HeaderText="工号"></asp:BoundColumn>
                  <asp:BoundColumn DataField="dept" HeaderText="部门"></asp:BoundColumn>
                 </Columns>
                 <PagerStyle Visible="False" HorizontalAlign="Right" Mode="NumericPages"></PagerStyle>
                </asp:datagrid>

后台代码:

private void dgUserList_PreRender(object sender, System.EventArgs e)

来源于LengYubing’s Blog