UsingUsings

A .NET tool that provides statistics on how much you use a using directive. In C# 10, the global using directives feature was added. Essentially, this lets you declare a using directive that's available for all files within a solution:

global using System;

But which using directives in your code base should you make global? That's what this tool does for you. You point it at a directory, and it'll parse all the .cs files within that directory (including all subdirectories), looking for using directives. It'll calculate how often you use a using, and provide a report when it's done so you can determine which ones you use a lot. Those are probably good targets to turn into global usings.

Getting Started

Install the tool (the -g switch means it will be installed as a global tool):

dotnet tool install -g UsingUsings

Prerequisites

This tool targets .NET 8.

Usage

Once the tool is installed, you can run using analysis on code within a directory:

usingusings "My-Target-Directory-Goes-Here"

Additional documentation

• Global using directives