Fix crash in UWP design mode (#735)

diff --git a/Xamarin.Forms.Platform.WinRT/WindowsBasePage.cs b/Xamarin.Forms.Platform.WinRT/WindowsBasePage.cs
index 3197321..e1700a8 100644 (file)
--- a/Xamarin.Forms.Platform.WinRT/WindowsBasePage.cs
+++ b/Xamarin.Forms.Platform.WinRT/WindowsBasePage.cs
@@ -14,8 +14,11 @@ namespace Xamarin.Forms.Platform.WinRT
        {
                public WindowsBasePage()
                {
-                       Windows.UI.Xaml.Application.Current.Suspending += OnApplicationSuspending;
-                       Windows.UI.Xaml.Application.Current.Resuming += OnApplicationResuming;
+                       if (!DesignMode.DesignModeEnabled)
+                       {
+                               Windows.UI.Xaml.Application.Current.Suspending += OnApplicationSuspending;
+                               Windows.UI.Xaml.Application.Current.Resuming += OnApplicationResuming;
+                       }
                }
 
                protected Platform Platform { get; private set; }