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Which version of C# to use?

By: Ram Baskar in Csharp Tutorials on 2011年02月04日 [フレーム]

The version of C# that you should use depends on several factors, including the specific features that you need for your application, the compatibility requirements of the target platform, and the support provided by your development environment.

Here are some guidelines to help you choose the appropriate version of C# for your project:

If you are starting a new project and have the option to choose the version of C# to use, you should use the latest version available. As of May 2023, the latest version of C# is C# 10.
If you are working on an existing project, you should check which version of C# is currently being used and whether upgrading to a newer version is feasible and beneficial.
If you are targeting a specific platform or framework that has limited support for newer versions of C#, you may need to use an older version. For example, if you are targeting .NET Framework 4.5 or earlier, you can only use C# up to version 5.
If you need to use specific features that are only available in a particular version of C#, you should use that version. For example, C# 8 introduced nullable reference types, so if you need to use this feature, you must use C# 8 or later.

In general, using the latest version of C# can provide you with the most up-to-date language features and performance improvements. However, you should also consider the support provided by your development environment and the requirements of your target platform to ensure compatibility and maintainability of your code.

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