Update updatepanel if ANY control is clicked inside updatepanel

Hello,

I wonder if it is possible to run a C# function if ANY control that exists inside the updatepanel is changed. This code works if any of the 2 dropdownlists is changed or if the button is clicked. So I have put all 3 controlIDs in the "<Triggers>".

The problem now is that I will have about 200 dropdownlists and 200 buttons and like to avoid putting all of them in the "<Triggers>".

I wonder if that is possible to do and if so how to do that for the below code?

<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="true" ><ContentTemplate><asp:Button ID="Button1" runat="server" Text="button" Width="271px" OnClick="dosomething_Click" /><asp:DropDownList ID="DropDownList1" runat="server" Width="121px" AutoPostBack="true" onselectedindexchanged="dosomething_Click"><asp:ListItem>1</asp:ListItem><asp:ListItem>2</asp:ListItem></asp:DropDownList><asp:DropDownList ID="DropDownList2" runat="server" Width="121px" AutoPostBack="true" onselectedindexchanged="dosomething_Click"><asp:ListItem>1</asp:ListItem><asp:ListItem>2</asp:ListItem></asp:DropDownList></ContentTemplate>   <Triggers>    <asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click"/> <asp:AsyncPostBackTrigger ControlID="DropDownList1" EventName="SelectedIndexChanged" /> <asp:AsyncPostBackTrigger ControlID="DropDownList2" EventName="SelectedIndexChanged" /> </Triggers>  </asp:UpdatePanel>  





//C# code
        protected void dosomething_Click()
        {
            //dosomething
        }