Good day! I am new to Visual Studio 2012 and am running into an issue with coverting .ascx files into web application files, with .cs code behind files.
I am supposed to be able to right-click on the parent directory containing several files, all with .ascx as the file type, and select 'Convert to web application'. This should then create .cs code behind files for each file in the directory (in this case, called Sublayouts). I try to do this and the first file is adjusted correctly, but none of the others are.
I am not aware of any error messages being displayed. The only message I see in the Error List window is the following:
Validation (ASP.Net): Attribute 'placeholder' is not a valid attribute of element 'Sublayout'.
I check that part of the .ascx code and the code shows placeholder="content'
How do I correct this? I have tried several other avenues of support to no avail.
Thanks in advance!