Intercepting an exception inside IDisposable.Dispose

Question

In the IDisposable.Dispose method is there a way to figure out if an exception is being thrown?

using (MyWrapper wrapper = new MyWrapper())
{
           


        

Answer 1

In my case, I wanted to do this to log when an microservice crashes. I already have in place a using to properly clean up right before an instance shut down, but if that's because of an exception I want to see why, and I hate no for an answer.

Instead of trying to make it work in Dispose(), perhaps make a delegate for the work you need to do, and then wrap your exception-capturing in there. So in my MyWrapper logger, I add a method that takes an Action / Func:

 public void Start(Action behavior)
     try{
        var string1 = "my queue message";
        var string2 = "some string message";
        var string3 = "some other string yet;"
        behaviour(string1, string2, string3);
     }
     catch(Exception e){
       Console.WriteLine(string.Format("Oops: {0}", e.Message))
     }
 }

To implement:

using (var wrapper = new MyWrapper())
  {
       wrapper.Start((string1, string2, string3) => 
       {
          Console.WriteLine(string1);
          Console.WriteLine(string2);
          Console.WriteLine(string3);
       }
  }

Depending on what you need to do, this may be too restrictive, but it worked for what I needed.