CODEWITHSUNDEEP
c#nullable
webworm
webworm

Reputation: 11019

Which version of the C# compiler introduced nullable types?

My C# code is being run in a older version of C# (4.0.30319.34209) than in my own development environment. I am wondering if my usage of nullable types will work on this older version of C#. Does anyone know what version of C# nullable types were introduced in? My "Google-fu" came up with nothing.

Upvotes: 1

Views: 2116

Answers (4)

Yurii N.
Yurii N.

Reputation: 5703

From here, Nullable appllies to:

.NET Core
2.2 2.1 2.0 1.1 1.0

.NET Framework
4.8 4.7.2 4.7.1 4.7 4.6.2 4.6.1 4.6 4.5.2 4.5.1 4.5 4.0 3.5 3.0 2.0

.NET Standard
2.0 1.6 1.5 1.4 1.3 1.2 1.1 1.0

Xamarin.Android
7.1

Xamarin.iOS
10.8

Xamarin.Mac
3.0

Upvotes: 2

w0ns88
w0ns88

Reputation: 345

Here is a history of C# versions: https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-version-history It states that nullable types were introduced in C# v2.0. Hope it helps.

Upvotes: 0

andreasnico
andreasnico

Reputation: 1488

C# 2.0 introduced nullable types that allow you to assign null to value type variables. You can declare nullable types using Nullable where T is a type.

Copied from here: http://www.tutorialsteacher.com/csharp/csharp-nullable-types

Upvotes: 0

Marc Gravell
Marc Gravell

Reputation: 1062494

Nullable types are §19.5 in the C# 2.0 specification, so: .NET 2.0 and C# 2.0 (it can't have been earlier, as it depends on "generics", which is definitely 2.0)

Upvotes: 6

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