If you want to backstop on some controls click you must need to specify triggers in UpdatePanel
For example:
<asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:Repeater ID="Repeater1" runat="server" DataSourceID="SqlDataSource1"> <ItemTemplate> <%# Eval("Name") >%> <asp:Button ID="Button1" runat="server" Text="Button" /> </ItemTemplate> </asp:Repeater> </ContentTemplate> <Triggers> <asp:PostBackTrigger ControlID="Buton1" /> </Triggers> </asp:UpdatePanel>
You will face following error message with above code
A control with ID ‘Button1’ could not be found for the trigger in UpdatePanel ‘UpdatePanel1’.
Here is simple solution for above problem
<asp:Repeater ID="Repeater1" runat="server" DataSourceID="SqlDataSource1"> <ItemTemplate> <!--when cick the button1, it will fire the btnDummy--> <asp:Button ID="Button1" Text="Click" OnClientClick="$get('btnDummy').click();return false;" runat="server" /> </ItemTemplate> </asp:Repeater> <!--Make a hidden button to treat as the postback trigger--> <asp:Button ID="btnDummy" runat="server" Style="display: none" Text="HiddenButton" />
EXCELLENT SOLUTION THANK YOU