From: rahul on
Limitations of Edit and ContinueSee Also
Edit and Continue | Edit and Continue, Debugging, Options Dialog Box
Edit and Continue applies to C/C++ programs only.

Edit and Continue has some limitations, which are described in the
following topics:

Types of Code Changes
Point of Execution
Edit and Continue with Visual C# and Visual Basic
Stale Code
Attribute Limitations
Linking Limitations
Precompiled Header Limitations
See Also
Edit and Continue | Edit and Continue, Debugging, Options Dialog Box