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What does "DateTime?" mean in C#?

Mappy Show answered on May 5, 2022 Popularity 8/10 Helpfulness 1/10

answer What does "DateTime?" mean in C#?

What does "DateTime?" mean in C#?

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Since DateTime is a struct, not a class, you get a DateTime object, not a reference
, when you declare a field or variable of that type.

And, in the same way as an int cannot be null, so this DateTime object can never 
be null, because it's not a reference.

Adding the question mark turns it into a nullable type, which means that either 
it is a DateTime object, or it is null.

DateTime? is syntactic sugar for Nullable<DateTime>, where Nullable 
is itself a struct

Popularity 8/10 Helpfulness 1/10 Language csharp

Source: stackoverflow.com

Tags: c# mean

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