抛出Invalidcastexception，将null分配为可为空的十进制类型

Question

I put it back here as I am not dreaming.

Symptom: I am unable to assign null value to type decimal?. Assigning null throws exception.

decimal? value = (decimal?) null;

This time I add a picture as evidence because apparently others do not believe my issue.

Problem persists. This is the full code I am not hiding anything. I recompiled, reloaded and restarted. I also expect this to be working. But it does not.

Has anyone experienced similar?

Answer 1

Clean your solution and make sure that you debug your application in the DEBUG mode or have some debugging symbols from the current build. The code that you are showing is not throwing the exception, but something else from what you didn't shown is throwing this exception. For a prototype application, in up to date Visual Studio the sample code that you are showing works fine:

As you can see, the (decimal?) cast of null is not required, so you can just remove it and recompile your application.