private void SetTextTime(string text) { // InvokeRequired required compares the thread ID of the // calling thread to the thread ID of the creating thread. // If these threads are different, it returns true. if (this.textBox6.InvokeRequired) { SetTextCallbackTime d = new SetTextCallbackTime(SetTextTime); try { this.Invoke(d, new object[] { text }); } catch { } } else { this.textBox6.Text = text; } }