Visual Studio 2022: C# Global Namespace

Global usings were introduced in C# 10 and .NET Core 6.0 and later versions. This feature proves to be highly beneficial as it allows you to incorporate commonly used namespaces. As a developer, the emphasis is often on code reusability and maintaining clean, organized code.

Visual Studio 2022: C# Global Namespace

Global usings contribute significantly to achieving this goal. By employing global usings, there's no necessity to redundantly add the same namespace to every class file.

Determine the namespaces that are frequently used throughout your project and can be considered as candidates for global usings. These namespaces should be relevant and consistent across different parts of your codebase.

UI for Global Namespace in VS 2022:

Global namespaces UI screens are only available in the latest version of Visual Studio 2022. This feature is not present in earlier versions such as VS 2019 and VS 2022 for Mac. It allows you to define namespaces globally for your project, minimizing the need to repeatedly include the same namespaces in multiple class files. You can follow the below steps to implement Global name space in VS 2022 
  • Open your project in Visual Studio 2022, Here I have created a new MAUI application
  • Right-click on the project's  .csproj  file within the Solution Explorer.
  • Choose "Property" from the context menu.
As per the below screen Select below Global using and add your global usings and alias name

UI for Global Namespace in VS 2022

If you are using Visual Studio 2019 or an earlier version where the mentioned UI is not available, you can implement global use in your project by following the steps below.

Global Usings File for  VS 2019 and VS 2022 for Mac:
In C# 10 and .NET Core 6.0 or later, create a file named "GlobalUsings.cs" (or any appropriate name) in your project. Inside this file, use the "global" keyword followed by the "using" directives for the namespaces you want to make globally accessible. For example:

Accessing Namespaces
Once you've set up the global usings, any class file within your project can directly access the namespaces specified in the "GlobalUsings.cs" file. You won't need to explicitly include these namespaces in every individual class file that uses them.

For instance, if you've declared System.IO in your global usings, you won't need to include using System.IO; in each class file that utilizes file-related functionality from the System.IO namespace.

I hope this article has provided you with valuable insights into Global Usings in Visual Studio 2022 and the Global Using file. If you have any questions or queries about global namespaces, please feel free to leave a comment in the designated comment section. I'll do my best to address and answer your inquiries.


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