if Task.Run runs a task in async then why and when i should write asyn

Use async to write clear, non-blocking code that naturally handles asynchronous work. Task.Run just offloads work to a thread async is better for I/O tasks and responsiveness.

Q1: Does Task.Run create an async task?

Yes, but with a nuance.

• Task.Run queues work to the thread pool and returns a Task that represents that work.
• If you pass a synchronous delegate, it runs on a background thread.
• If you pass an async delegate, it still starts on a background thread, but the await inside the delegate allows the thread to be released during I/O-bound operations.

Q2: Why and when do we use Task.Run(async () => { ... })?

This pattern is useful when:

• You're in a non-async context (like a button click handler or legacy code).
• You need to run async code without changing the method signature to async.
• You want to offload async I/O-bound work to avoid blocking the UI thread.

When NOT to use Task.Run(async () => { ... })

• If you're already in an async method, just await the async call directly.
• Don't use it to wrap async code unnecessarily—it adds overhead and can lead to thread pool exhaustion.