Issue with gridview buttons and sqldatasource - asp.net

Question

I have a gridview with edit and delete buttons:
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" style= "-moz-border-radius: 15px;border-radius: 15px;"
AllowSorting="True" AutoGenerateColumns="False" CellPadding="4"
DataKeyNames="AREA" DataMember="DefaultView"
ForeColor="#333333" Height="90%" Width="90%">
<RowStyle BackColor="#EFF3FB" />
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="AREA" HeaderText="AREA" ReadOnly="True"
SortExpression="AREA" />
<asp:BoundField DataField="LIDER_USUARIO" HeaderText="LIDER_USUARIO"
SortExpression="LIDER_USUARIO" />
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="editButton" runat="server" CommandName="Edit"
ImageUrl="images/pencil1.png" Text="Edit" />
</ItemTemplate>
<EditItemTemplate>
<asp:Button ID="BtnUpdate" runat="server" CommandName="Update"
Text="Edit" />
<asp:Button ID="BtnCancel" runat="server" CommandName="Cancel"
Text="Cancel" />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="deleteButton" runat="server" CommandName="Delete"
ImageUrl="images/DeleteRed1.png"
OnClientClick="return confirm('Are u sure?');" Text="Delete" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
And a sqldatasource:
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:DBUserInterfaceConnectionString %>"
DeleteCommand="DELETE FROM [TABLE] WHERE ...;"
SelectCommand="SELECT * FROM [TABLE]"
UpdateCommand="UPDATE TABLE SET ...;">
</asp:SqlDataSource>
If I link them using DatasourceID(gridview property DataSourceID="SqlDataSource1") both buttons work, but I try to do it using vb code behind they DON'T(when I press buttons nothing happens):
Protected Sub Page_Load(...
GridView1.DataSource = SqlDataSource1
GridView1.DataBind()
I need to make it using code behind. How to make them work?

Answer 1

Try using the DataSourceID property and point it to the ID of the data source, like this:
GridView1.DataSourceID = SqlDataSource1.ID
GridView1.DataBind()

Answer 2

You need to wrap them in If Not IsPostBack:
Protected Sub Page_Load(...
If Not IsPostBack Then
GridView1.DataSource = SqlDataSource1
GridView1.DataBind()
EndIf