I realized that in an almost 2 years project I have some XIB files with their associated xib.cs files and xib.designer.cs and newer XIB files associated to cs and designer cs. I never thought about this could be important.
Since ASP.NET generates it ASPX files with aspx.cs and aspx.designer.cs, how can I make MonoDevelop to create xib.cs files again and how can I rename those doesn't have xib.cs? (just rename?)
I see today that if I get a cs file shared between Visual Studio and MonoDevelop and on ASP.NET a aspx.cs file with exclusive things (like Page_Load) and on xib.cs file on MonoTouch with exclusive MonoTouch things (like ViewDidLoad) I can avoid some #if ASPNET #elif MonoTouch...
But as it is a bit messed on 40 xibs project being crossplatformed to ASPX/MonoDroid/Windows Phone... I must clean this.