C# 6 null propagation what value is set when object is null

Question

var result = myObject?.GetType();

In this scenario what would be the value of Result if myObject is null?

Take a look at my article on [What's New in C# 6](https://www.simple-talk.com/dotnet/.net-framework/whats-new-in-c-6/). There I show what's happening behind the curtain. — Paulo Morgado, Dec 03 '15 at 07:42

score 9 · Accepted Answer · answered Dec 03 '15 at 01:30

Assuming your object does not hide default object.GetType definition: GetType returns Type, which is a reference type, so null will be returned, and result will be inferred to be of type Type.

If your object has a method which does hide object.GetType, it will also return null, but type inferred for result might change: it will either be TResult if that method returns reference type TResult, or Nullable<TResult> if it returns a value type of type TResult.

score 6 · Answer 2 · answered Dec 03 '15 at 01:37

6

The result should be null because the ? operator short circuits the operation.

answered Dec 03 '15 at 01:37

Cameron E

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C# 6 null propagation what value is set when object is null

2 Answers2