using of template in gridview reg

    <br /><br /><br />
        <asp:GridView 
        ID="GridView1" 
        runat="server" 
        DataSourceID="SqlDataSource1"
        PageSize="2" 
        AutoGenerateEditButton="true"
        DataKeyNames="ID"
        AllowPaging="true" AutoGenerateColumns="false">
        <Columns>
        <asp:TemplateField HeaderText="ID">
            <ItemTemplate>
            <%# Eval("ID")%>
            ItemTemplate>
            <EditItemTemplate>
            <asp:TextBox
                id="txtID"
                Text='<%# Bind("ID") %>'
                Runat="server" />
            EditItemTemplate>
        asp:TemplateField>

        <asp:TemplateField HeaderText="Name">
            <ItemTemplate>
            <%# Eval("Name")%>
            ItemTemplate>
            <EditItemTemplate>
            <asp:TextBox
                id="txtName"
                Text='<%# Bind("Name") %>'
                Runat="server" />
                <asp:RequiredFieldValidator
                id="valName"
                ControlToValidate="txtName"
                Text="(required)"
                Runat="server" 
                BackColor="Blue"/>
            EditItemTemplate>
        asp:TemplateField>

        <asp:TemplateField HeaderText="Address">
            <ItemTemplate>
            <%# Eval("Address")%>
            ItemTemplate>
            <EditItemTemplate>
            <asp:TextBox
                id="txtAddress"
                Text='<%# Bind("Address") %>'
                Runat="server" />
            EditItemTemplate>
        asp:TemplateField>
        Columns>
        asp:GridView>
        <br />
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
            ConnectionString="<%$ ConnectionStrings:DatabaseConnectionString1 %>" 
            SelectCommand="SELECT * FROM MyTB" 
            UpdateCommand="UPDATE MyTB SET Name=@Name, Address=@Address WHERE ID=@ID">
        asp:SqlDataSource>
        <br />
    div>