Fixed warnings

RGB.NET.Brushes/Gradients/AbstractGradient.cs

@@ -23,7 +23,7 @@ namespace RGB.NET.Brushes.Gradients
         /// <summary>
         /// Gets a list of the stops used by this <see cref="AbstractGradient"/>.
         /// </summary>
-        public ObservableCollection<GradientStop> GradientStops { get; } = new ObservableCollection<GradientStop>();
+        public ObservableCollection<GradientStop> GradientStops { get; } = new();
 
         private bool _wrapGradient;
         /// <summary>
@@ -42,7 +42,7 @@ namespace RGB.NET.Brushes.Gradients
         #region Events
 
         /// <inheritdoc />
-        public event EventHandler GradientChanged;
+        public event EventHandler? GradientChanged;
 
         #endregion
 
@@ -54,7 +54,7 @@ namespace RGB.NET.Brushes.Gradients
         protected AbstractGradient()
         {
             GradientStops.CollectionChanged += GradientCollectionChanged;
-            PropertyChanged += (sender, args) => OnGradientChanged();
+            PropertyChanged += (_, _) => OnGradientChanged();
         }
 
         /// <summary>
@@ -64,7 +64,7 @@ namespace RGB.NET.Brushes.Gradients
         protected AbstractGradient(params GradientStop[] gradientStops)
         {
             GradientStops.CollectionChanged += GradientCollectionChanged;
-            PropertyChanged += (sender, args) => OnGradientChanged();
+            PropertyChanged += (_, _) => OnGradientChanged();
 
             foreach (GradientStop gradientStop in gradientStops)
                 GradientStops.Add(gradientStop);
@@ -80,7 +80,7 @@ namespace RGB.NET.Brushes.Gradients
             this.WrapGradient = wrapGradient;
 
             GradientStops.CollectionChanged += GradientCollectionChanged;
-            PropertyChanged += (sender, args) => OnGradientChanged();
+            PropertyChanged += (_, _) => OnGradientChanged();
 
             foreach (GradientStop gradientStop in gradientStops)
                 GradientStops.Add(gradientStop);
@@ -128,9 +128,9 @@ namespace RGB.NET.Brushes.Gradients
         /// <summary>
         /// Should be called to indicate that the gradient was changed.
         /// </summary>
-        protected void OnGradientChanged() => GradientChanged?.Invoke(this, null);
+        protected void OnGradientChanged() => GradientChanged?.Invoke(this, EventArgs.Empty);
 
-        private void GradientCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+        private void GradientCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
         {
             if (e.OldItems != null)
                 foreach (GradientStop gradientStop in e.OldItems)
@@ -143,7 +143,7 @@ namespace RGB.NET.Brushes.Gradients
             OnGradientChanged();
         }
 
-        private void GradientStopChanged(object sender, PropertyChangedEventArgs propertyChangedEventArgs) => OnGradientChanged();
+        private void GradientStopChanged(object? sender, PropertyChangedEventArgs propertyChangedEventArgs) => OnGradientChanged();
 
         #endregion
     }

RGB.NET.Brushes/Gradients/LinearGradient.cs

@@ -16,7 +16,7 @@ namespace RGB.NET.Brushes.Gradients
         #region Properties & Fields
 
         private bool _isOrderedGradientListDirty = true;
-        private LinkedList<GradientStop> _orderedGradientStops;
+        private LinkedList<GradientStop> _orderedGradientStops = new();
 
         #endregion
 
@@ -60,12 +60,12 @@ namespace RGB.NET.Brushes.Gradients
 
         private void Initialize()
         {
-            void OnGradientStopOnPropertyChanged(object sender, PropertyChangedEventArgs args) => _isOrderedGradientListDirty = true;
+            void OnGradientStopOnPropertyChanged(object? sender, PropertyChangedEventArgs args) => _isOrderedGradientListDirty = true;
 
             foreach (GradientStop gradientStop in GradientStops)
                 gradientStop.PropertyChanged += OnGradientStopOnPropertyChanged;
 
-            GradientStops.CollectionChanged += (sender, args) =>
+            GradientStops.CollectionChanged += (_, args) =>
                                                {
                                                    if (args.OldItems != null)
                                                        foreach (GradientStop gradientStop in args.OldItems)
@@ -114,18 +114,18 @@ namespace RGB.NET.Brushes.Gradients
         /// <returns></returns>
         protected virtual (GradientStop gsBefore, GradientStop gsAfter) GetEnclosingGradientStops(double offset, LinkedList<GradientStop> orderedStops, bool wrap)
         {
-            LinkedList<GradientStop> gradientStops = new LinkedList<GradientStop>(orderedStops);
+            LinkedList<GradientStop> gradientStops = new(orderedStops);
 
             if (wrap)
             {
-                GradientStop gsBefore, gsAfter;
+                GradientStop? gsBefore, gsAfter;
 
                 do
                 {
                     gsBefore = gradientStops.LastOrDefault(n => n.Offset <= offset);
                     if (gsBefore == null)
                     {
-                        GradientStop lastStop = gradientStops.Last.Value;
+                        GradientStop lastStop = gradientStops.Last!.Value;
                         gradientStops.AddFirst(new GradientStop(lastStop.Offset - 1, lastStop.Color));
                         gradientStops.RemoveLast();
                     }
@@ -133,7 +133,7 @@ namespace RGB.NET.Brushes.Gradients
                     gsAfter = gradientStops.FirstOrDefault(n => n.Offset >= offset);
                     if (gsAfter == null)
                     {
-                        GradientStop firstStop = gradientStops.First.Value;
+                        GradientStop firstStop = gradientStops.First!.Value;
                         gradientStops.AddLast(new GradientStop(firstStop.Offset + 1, firstStop.Color));
                         gradientStops.RemoveFirst();
                     }

RGB.NET.Brushes/Gradients/RainbowGradient.cs

@@ -41,7 +41,7 @@ namespace RGB.NET.Brushes.Gradients
         #region Events
 
         /// <inheritdoc />
-        public event EventHandler GradientChanged;
+        public event EventHandler? GradientChanged;
 
         #endregion
 
@@ -57,7 +57,7 @@ namespace RGB.NET.Brushes.Gradients
             this.StartHue = startHue;
             this.EndHue = endHue;
 
-            PropertyChanged += (sender, args) => OnGradientChanged();
+            PropertyChanged += (_, _) => OnGradientChanged();
         }
 
         #endregion
@@ -85,7 +85,7 @@ namespace RGB.NET.Brushes.Gradients
 
             StartHue += offset;
             EndHue += offset;
-            
+
             while ((StartHue > 360) && (EndHue > 360))
             {
                 StartHue -= 360;
@@ -101,7 +101,7 @@ namespace RGB.NET.Brushes.Gradients
         /// <summary>
         /// Should be called to indicate that the gradient was changed.
         /// </summary>
-        protected void OnGradientChanged() => GradientChanged?.Invoke(this, null);
+        protected void OnGradientChanged() => GradientChanged?.Invoke(this, EventArgs.Empty);
 
         #endregion
     }