Changing ascx file and avoiding compilation error

[Seolwyde]

I'm working on a user control and making some changes to the HTML. When I do so and refresh the page, I get a compilation error:\[quote\] Compiler Error Message: CS0433: The type 'ASP.usercontrols_somepagename_ascx' exists in both 'c:\Users\compname\AppData\Local\Temp\Temporary ASP.NET Files\dev\342db40c\e48a4253\App_Web_1hgtod1r.dll' and 'c:\Users\compname\AppData\Local\Temp\Temporary ASP.NET Files\dev\342db40c\e48a4253\App_Web_nqhev1ea.dll'\[/quote\]So everytime I make a change, I need to rebuild the site. This works but it's a pain. How can I remove this extra step and fix this error?Thanks.