<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:TestConnectionString %>"
            ProviderName="<%$ ConnectionStrings:TestConnectionString.ProviderName %>" 
            SelectCommand="SELECT * FROM [DOCTYPETB]"
            UpdateCommand="UPDATE DOCTYPETB SET DOCTYPENAME = @DOCTYPENAME WHERE DOCTYPEID=@DOCTYPEID">
            <UpdateParameters>
                <asp:Parameter Name="DOCTYPENAME " />
                <asp:ControlParameter ControlID="GridView1" Name="DOCTYPEID" PropertyName="SelectedValue"
                    Type="Int32" />
            </UpdateParameters>
        </asp:SqlDataSource>

    Protected Sub GridView2_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles GridView2.RowCommand
        On Error Resume Next
        TextBox1.Text = GridView2.SelectedRow.Cells( 2 ).Text
    End Sub