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C# 10–Change an existing project to file scoped namespaces

C# 10 introduces file scoped namespaces. This allows you to remove the ‘{}’ when your source file only has one namespace(like most files typically have).

So instead of writing:

you can now write:

To apply this for an existing project written in C# 9 or lower, you can do this in one go.

Therefore set the language version of your project to C# 10:

Now we need to update our .editorconfig file and add the following line:

After doing that Visual Studio will help us out and we can use “Fix all occurences in Solution” to apply it in one go:

 

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