vs 2012 - The following module was built either with optimizations enabled or without debug information

I started getting this warning window while debugging one of my projects and to workaround it I had to change my debugger settings.

asp.net - Access Master Page Label from Content Page

The below screenshots show how one can have a label on master page for displaying messages to the user using the application.

Site.Master 

Site.Master.cs 

Default.aspx 

Default.aspx.cs