If you want to edit your WAPs while debugging them, here is how you do it:

1. Check the “Enable Edit and Continue” checkbox in the Web Properties page.

Enable Edit and Continue

2. Check the “Enable Edit and Continue” checkbox under  Tools->Options->Debugging->Edit and Continue

Tools Options for Edit and Continue

These two setting will enable Edit and Continue as you debug your WAPs.

Reshmi Mangalore

SDET, Visual Web Developer