altered dotnet-counters to work with inputRedirection #2329 (#2466)

* altered dotnet-counters to work with inputRedirection #2329

* Altered to allow for multiple key presses and removed debugging code

* Altered to allow for multiple key presses

src/Tools/dotnet-counters/CounterMonitor.cs

@@ -464,7 +464,7 @@ public async Task<int> Monitor(
                 {
                     return ReturnCode.ArgumentError;
                 }
-                _ct.Register(() => _shouldExit.TrySetResult(ReturnCode.Ok));
+                ct.Register(() => _shouldExit.TrySetResult(ReturnCode.Ok));
 
                 DiagnosticsClientBuilder builder = new DiagnosticsClientBuilder("dotnet-counters", 10);
                 using (DiagnosticsClientHolder holder = await builder.Build(ct, _processId, diagnosticPort, showChildIO: false, printLaunchCommand: false))
@@ -537,7 +537,7 @@ public async Task<int> Collect(
                     return ReturnCode.ArgumentError;
                 }
 
-                _ct.Register(() => _shouldExit.TrySetResult(ReturnCode.Ok));
+                ct.Register(() => _shouldExit.TrySetResult(ReturnCode.Ok));
 
                 DiagnosticsClientBuilder builder = new DiagnosticsClientBuilder("dotnet-counters", 10);
                 using (DiagnosticsClientHolder holder = await builder.Build(ct, _processId, diagnosticPort, showChildIO: false, printLaunchCommand: false))
@@ -841,7 +841,7 @@ private Task<int> Start()
             while(!_shouldExit.Task.Wait(250))
             {
                 HandleBufferedEvents();
-                if (Console.KeyAvailable)
+                if (!Console.IsInputRedirected && Console.KeyAvailable)
                 {
                     ConsoleKey cmd = Console.ReadKey(true).Key;
                     if (cmd == ConsoleKey.Q)
@@ -858,7 +858,6 @@ private Task<int> Start()
                     }
                 }
             }
-
             StopMonitor();
             return _shouldExit.Task;
         }