Add missing usings in Visual Studio
This code generation applies to:
What: Lets you immediately add the necessary imports or using directives for copy-and-pasted code.
When: It's common practice to copy code from different places in your project or other sources and paste it in to new code. This Quick Action finds missing imports directives for copy-and-pasted code and then prompts you to add them. This code fix can also add references from project to project.
Why: Because the Quick Action automatically adds necessary imports, you don't need to manually copy the
using directives that your code needs.
Add missing usings refactoring
Copy code from a file and paste it into a new one without including the necessary
usingdirectives. The resulting error is accompanied by a code fix that adds the missing
You need to enable this suggestion in Tools > Options > Text Editor > C# > Advanced > Using Directives.
Select Ctrl+. to open the Quick Actions and Refactorings menu.
Select using <your reference>; to add the missing reference.