How to use async and await in c#?

The async and await keywords in C# enable asynchronous programming, allowing you to perform long-running operations without blocking the main thread.

Example:

  public async Task LongRunningOperation() 
  {
      await Task.Delay(1000);
      return 1;
  }
  

Solution:

With the async keyword, you can define an asynchronous method, and the await keyword indicates a point in the method where it'll asynchronously wait for the task to complete:

  int result = await LongRunningOperation();
  Console.WriteLine(result);  // Outputs: 1