Cannot write code in visual studio while debugging

Question

Hi I have been shifted from VS 2013 to 2015 presently. So I am not too much familiar with in depth specifications.

I like VS 2015 as it allows me to evaluate lambda expressions and also it allow to me to change values runtime.

Scenario:

In some apps (winforms tested only) I am able to edit code while debugging and yes latest code is executed always i.e I don't need to stop and run the program again and againe. Yes it is very excellent feature.

But in case of my first experience at controller in MVC I am unable to edit code and it shows me multiple reasons behind this.

Can someone explain in what scenarios I can add/delete code while debugging?

Thanks in advance!

Answer 1

In your visual studio go to Tools->Options-> expand debugging -> select Edit and continue and then check Enable edit and continue. here is image of that: see screenshot

Answer 2

You normally cannot edit and continue if you attached to an already running process which maybe your case if you are attached to a running MVC web project. If something was load using Reflection you will not be able to edit it as well.