Asp.net controls are not accessible in code behind

Question

I have a project that was previously built by someone else. When I try to add a new control to the page, I can\'t access it in the code behind. When I try to access it there

Answer 1

I had the same issue when 2 ASP Pages were using the same Code Behind file (It was ASP.NET Web Site project in Visual Studio 2013, not an ASP.NET Web Application). I have solved the problem by changing it to use different Code Behind files for each page.