Fixed AutoSuggestion event. (#460)

Author: FoxTes

ModernWpf.Controls/AutoSuggestBox/AutoSuggestBox.cs

@@ -334,7 +334,7 @@ private void OnDelayTimerTick(object sender, EventArgs e)
             if (m_delayTimer.Tag is AutoSuggestionBoxTextChangeReason reason)
             {
                 m_delayTimer.Tag = null;
-                TextChanged?.Invoke(this, new AutoSuggestBoxTextChangedEventArgs(this, Text) { Reason = reason });
+                TextChanged?.Invoke(this, new AutoSuggestBoxTextChangedEventArgs(this, Text, reason));
             }
         }
 

ModernWpf.Controls/AutoSuggestBox/AutoSuggestBoxQuerySubmittedEventArgs.cs

@@ -1,8 +1,8 @@
-using System.Windows;
+using System;
 
 namespace ModernWpf.Controls
 {
-    public sealed class AutoSuggestBoxQuerySubmittedEventArgs : DependencyObject
+    public sealed class AutoSuggestBoxQuerySubmittedEventArgs : EventArgs
     {
         public AutoSuggestBoxQuerySubmittedEventArgs()
         {

ModernWpf.Controls/AutoSuggestBox/AutoSuggestBoxSuggestionChosenEventArgs.cs

@@ -1,8 +1,8 @@
-using System.Windows;
+using System;
 
 namespace ModernWpf.Controls
 {
-    public sealed class AutoSuggestBoxSuggestionChosenEventArgs : DependencyObject
+    public sealed class AutoSuggestBoxSuggestionChosenEventArgs : EventArgs
     {
         public AutoSuggestBoxSuggestionChosenEventArgs()
         {

ModernWpf.Controls/AutoSuggestBox/AutoSuggestBoxTextChangedEventArgs.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Windows;
 
 namespace ModernWpf.Controls
 {
@@ -10,35 +9,21 @@ public enum AutoSuggestionBoxTextChangeReason
         SuggestionChosen = 2
     }
 
-    public sealed class AutoSuggestBoxTextChangedEventArgs : DependencyObject
+    public sealed class AutoSuggestBoxTextChangedEventArgs : EventArgs
     {
         public AutoSuggestBoxTextChangedEventArgs()
         {
         }
 
-        internal AutoSuggestBoxTextChangedEventArgs(AutoSuggestBox source, string value)
+        internal AutoSuggestBoxTextChangedEventArgs(AutoSuggestBox source, string value, AutoSuggestionBoxTextChangeReason reason)
         {
             m_source = new WeakReference<AutoSuggestBox>(source);
             m_value = value;
+            Reason = reason;
         }
-
-        #region Reason
-
-        public static readonly DependencyProperty ReasonProperty =
-            DependencyProperty.Register(
-                nameof(Reason),
-                typeof(AutoSuggestionBoxTextChangeReason),
-                typeof(AutoSuggestBoxTextChangedEventArgs),
-                new PropertyMetadata(AutoSuggestionBoxTextChangeReason.ProgrammaticChange));
-
-        public AutoSuggestionBoxTextChangeReason Reason
-        {
-            get => (AutoSuggestionBoxTextChangeReason)GetValue(ReasonProperty);
-            set => SetValue(ReasonProperty, value);
-        }
-
-        #endregion
-
+        
+        public AutoSuggestionBoxTextChangeReason Reason { get; }
+        
         public bool CheckCurrent()
         {
             return m_source != null &&