AutomationDrivers.IisExpressHost.IisExpress.Start C# (CSharp) Method

        public Task Start(CancellationToken cancellationToken = default(CancellationToken))
        {
            var tcs = new TaskCompletionSource<object>();

            if (cancellationToken.IsCancellationRequested)
            {
                tcs.SetCanceled();
                return tcs.Task;
            }

            try
            {
                var proc = new Process { EnableRaisingEvents = true, StartInfo = _startInfo };

                DataReceivedEventHandler onOutput = null;
                onOutput =
                    (sender, e) =>
                    {
                        if (cancellationToken.IsCancellationRequested)
                        {
                            tcs.TrySetCanceled();
                        }

                        try
                        {
                            Debug.WriteLine("  [StdOut]\t{0}", (object)e.Data);

                            if (string.Equals(ReadyMsg, e.Data, StringComparison.OrdinalIgnoreCase))
                            {
                                proc.OutputDataReceived -= onOutput;
                                _process = proc;
                                tcs.TrySetResult(null);
                            }
                        }
                        catch (Exception ex)
                        {
                            tcs.TrySetException(ex);
                            proc.Dispose();
                        }
                    };
                proc.OutputDataReceived += onOutput;
                proc.ErrorDataReceived += (sender, e) => Debug.WriteLine("  [StdOut]\t{0}", (object)e.Data);
                proc.Exited += (sender, e) => Debug.WriteLine("  IIS Express exited.");

                proc.Start();
                proc.BeginOutputReadLine();
                proc.BeginErrorReadLine();
                ProcessId = proc.Id;
            }
            catch (Exception ex)
            {
                tcs.TrySetException(ex);
            }

            return tcs.Task;
        }