Question

Are there any events that Visual Studio raises while debugging that I could subscribe to in the code? Specifically, I’d like to know when a debugger is detached or stops. Thanks

Answer 1

In a separate thread you could check the Debugger.IsAttached method and generate events accordingly.

EDIT: I just whipped this up, see if it works.

 public class DebuggerEvents {

     public delegate void DebuggingStatusChanged(EventArgs e);
     public event DebuggingStatusChanged DebuggerAttached;
     public event DebuggingStatusChanged DebuggerUnattached;

     private readonly Thread workerThread;
     public DebuggerEvents() {
         var threadStart = new ThreadStart(BackgoundWorker);
         workerThread = new Thread(threadStart);
         workerThread.Start();
     }


     private void BackgoundWorker() {
      bool currentStateflag = Debugger.IsAttached;
         while (true) {

             if (Debugger.IsAttached && !currentStateflag){
                 DebuggerAttached(new EventArgs());
                 currentStateflag = true;
             }

             if (!Debugger.IsAttached && currentStateflag){
                 DebuggerUnattached(new EventArgs());
                 currentStateflag = false;
             }

             Thread.Sleep(100);
         }

     }
 }