clean postbuild script

clean warnings

Azaion.Annotator/Annotator.xaml.cs

@@ -253,10 +253,10 @@ public partial class Annotator
 
         ShowAnnotations(res.Annotation, showImage: true);
     }
-    private async Task SaveUserSettings()
+    private Task SaveUserSettings()
     {
         if (_suspendLayout)
-            return;
+            return Task.CompletedTask;
 
         _appConfig.UIConfig.LeftPanelWidth = MainGrid.ColumnDefinitions.FirstOrDefault()!.Width.Value;
         _appConfig.UIConfig.RightPanelWidth = MainGrid.ColumnDefinitions.LastOrDefault()!.Width.Value;
@@ -266,6 +266,7 @@ public partial class Annotator
             _configUpdater.Save(_appConfig);
             return Task.CompletedTask;
         }, SaveConfigTaskId, TimeSpan.FromSeconds(5));
+        return Task.CompletedTask;
     }
 
     private void ShowTimeAnnotations(TimeSpan time)

Azaion.Annotator/Controls/CircleVisual.cs

@@ -178,12 +178,13 @@ namespace Azaion.Annotator.Controls
 
         void ForceUpdateText()
         {
+
             _fText = new FormattedText(_text,
                 CultureInfo.InvariantCulture,
                 FlowDirection.LeftToRight,
                 Font,
                 FontSize,
-                Foreground);
+                Foreground, 1.0);
             IsChanged = true;
         }
 
@@ -207,7 +208,7 @@ namespace Azaion.Annotator.Controls
 
         Visual _child = null!;
 
-        public virtual Visual Child
+        public virtual Visual? Child
         {
             get => _child;
             set
@@ -228,7 +229,7 @@ namespace Azaion.Annotator.Controls
                 }
 
                 // cache the new child
-                _child = value;
+                _child = value!;
 
                 InvalidateVisual();
             }
@@ -295,7 +296,7 @@ namespace Azaion.Annotator.Controls
             }
         }
 
-        protected override Visual GetVisualChild(int index)
+        protected override Visual? GetVisualChild(int index)
         {
             return Child;
         }

Azaion.Annotator/Controls/MapMatcher.xaml.cs

@@ -46,8 +46,11 @@ public partial class MapMatcher : UserControl
 
     private async Task OpenGpsLocation(int gpsFilesIndex)
     {
-        var media = GpsFiles.Items[gpsFilesIndex] as MediaFileInfo;
+        //var media = GpsFiles.Items[gpsFilesIndex] as MediaFileInfo;
         var ann = _annotations.GetValueOrDefault(gpsFilesIndex);
+        if (ann == null)
+            return;
+
         GpsImageEditor.Background = new ImageBrush
         {
             ImageSource = await Path.Combine(_currentDir, ann.Name).OpenImage()
@@ -110,9 +113,9 @@ public partial class MapMatcher : UserControl
         await _gpsMatcherService.RunGpsMatching(dir.FullName, initialLat, initialLon, async res => await SetMarker(res));
     }
 
-    private async Task SetMarker(GpsMatchResult result)
+    private Task SetMarker(GpsMatchResult result)
     {
-        await Dispatcher.Invoke(async () =>
+        Dispatcher.Invoke(() =>
         {
             var marker = new GMapMarker(new PointLatLng(result.Latitude, result.Longitude));
             var ann = _annotations[result.Index];
@@ -126,6 +129,7 @@ public partial class MapMatcher : UserControl
             SatelliteMap.Position = new PointLatLng(result.Latitude, result.Longitude);
             SatelliteMap.ZoomAndCenterMarkers(null);
         });
+        return Task.CompletedTask;
     }
 
     private async Task SetFromCsv(List<MediaFileInfo> mediaFiles)