From 41fec831c2e41b637fa71f24a45e6e4f92fe2704 Mon Sep 17 00:00:00 2001
From: Jan Karger <jan.karger@inform-software.com>
Date: Fri, 27 Jan 2017 21:25:59 +0100
Subject: [PATCH] Don't fire TransitioningContentControl's TransitionCompleted
 twice   Closes #2817 TransitioningContentControl's TransitionCompleted event
 fires twice

---
 .../Controls/TransitioningContentControl.cs                 | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/MahApps.Metro/MahApps.Metro.Shared/Controls/TransitioningContentControl.cs b/src/MahApps.Metro/MahApps.Metro.Shared/Controls/TransitioningContentControl.cs
index a31fd46b42..06326022a9 100644
--- a/src/MahApps.Metro/MahApps.Metro.Shared/Controls/TransitioningContentControl.cs
+++ b/src/MahApps.Metro/MahApps.Metro.Shared/Controls/TransitioningContentControl.cs
@@ -329,8 +329,12 @@ public void ReloadTransition()
 
         private void OnTransitionCompleted(object sender, EventArgs e)
         {
+            var clockGroup = sender as ClockGroup;
             this.AbortTransition();
-            this.TransitionCompleted?.Invoke(this, new RoutedEventArgs());
+            if (clockGroup == null || clockGroup.CurrentState == ClockState.Stopped)
+            {
+                this.TransitionCompleted?.Invoke(this, new RoutedEventArgs());
+            }
         }
 
         public void AbortTransition()