Visual Studio（C＃）“替换热代码”

Question

I've previously developed in Java use Eclipse IDE and was used to a feature call HCR . This features is, as far as I know, only available in Eclipse. It allows you to replace code while the application is being debugged. No need to pause or stop the debugging session, just modify the file and, on save, replace the code in the JVM. There's a bit more details here is I'm not too clear.

Now, I'm curious to know if there's a similar feature in Visual Studio (either a feature or an extension). I know about Edit and Continue , but this requires pausing the application execution and it doesn't allow to edit the file while the code is running.

Answer 1

You can edit while debugging when you broke into your code (eg by a breakpoint or an exception). However there are some limitations on what you can edit while in a debugging-session.

Basically you can only change the internal but not the external behaviour of any member within your class. Having said this you cannot change the parameter-list or the return-value of your members or even their name. Furthermore there are some annyoing ones like lambdas, delegates and some conde-contracts that break the debgugger from continuing its work.

There might be reasons you wish to change some of these features while debugging, but the VS-designers chosed a highly save appraoch that your changes will not make your application crash while debugging.