Microsoft’s .NET team has unveiled five Copilot Chat prompts crafted to dramatically boost .NET developers’ workflow — covering code explanations, async conversion, test generation, security analysis, and mock data generation. These prompts are positioned as simple yet transformative tools to streamline legacy refactoring, improve quality, and foster security-aware coding practices. .NET developers are encouraged to “steal” these prompts and adapt them to fit team conventions and project needs.

Here are five prompts every .NET dev should try today:

“Explain this code and suggest optimizations”
Perfect for inherited projects or old code. Drop your C# files into Copilot Chat and get explanations plus tips for improving performance, readability, and maintainability.
“Write unit tests for this method/class”
Testing doesn’t have to slow you down. Let Copilot Chat generate xUnit, MSTest, or NUnit tests that ensure coverage and catch edge cases.
“Convert this code to use async/await”
Boost responsiveness and scalability by modernizing synchronous code. Copilot Chat helps apply best practices for asynchronous programming.
“Find and fix potential security issues in this snippet”
Let AI review your code for vulnerabilities like SQL injection, XSS, and more—before it reaches production.
“Generate sample data or mock objects for this model”
Need mock data fast? Whether for prototyping or testing, Copilot Chat can generate realistic objects to simulate real-world scenarios.