HTMLControl and Servercontrol

1.html control to become a server-side control plus runat= "Server";

2. <!--HTML server controls can use OnServerClick to invoke the server-side approach, but make sure there is no onclick (because there is no onclick triggering onserverclick)-
<input id= "Btnhtmlcontrol" type= "button" runat= "Server" value= "HTML control" onserverclick= "button2_click" onclick= " Return Btnhtmlcontrol_onclick () "/>

3. Click on a button to return an event onclick= "return Btnhtmlcontrol_click ()";

HTMLControl and Servercontrol