Update MainWindow.cs

Blissqiu · Oct 21, 2020 · 578be5f · 578be5f
1 parent e0f9650
commit 578be5f
Showing 1 changed file with 19 additions and 1 deletion.
diff --git a/Sample Applications/DataBindingDemo/MainWindow.cs b/Sample Applications/DataBindingDemo/MainWindow.cs
@@ -1,8 +1,11 @@
 // // Copyright (c) Microsoft. All rights reserved.
 // // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+using System.Collections.Specialized;
 using System.ComponentModel;
 using System.Windows;
+using System.Windows.Automation;
+using System.Windows.Automation.Peers;
 using System.Windows.Data;
 
 namespace DataBindingDemo
@@ -41,11 +44,21 @@ private void AddGrouping(object sender, RoutedEventArgs args)
             // This groups the items in the view by the property "Category"
             var groupDescription = new PropertyGroupDescription {PropertyName = "Category"};
             _listingDataView.GroupDescriptions.Add(groupDescription);
+
+            NotifyUpdate();
+
+        }
+
+        private void NotifyUpdate()
+        {
+            var listingPeer = ListBoxAutomationPeer.FromElement(Master);
+            listingPeer.RaiseAutomationEvent(AutomationEvents.LiveRegionChanged);
         }
 
         private void RemoveGrouping(object sender, RoutedEventArgs args)
         {
             _listingDataView.GroupDescriptions.Clear();
+            NotifyUpdate();
         }
 
         private void AddSorting(object sender, RoutedEventArgs args)
@@ -57,21 +70,26 @@ private void AddSorting(object sender, RoutedEventArgs args)
                 new SortDescription("Category", ListSortDirection.Ascending));
             _listingDataView.SortDescriptions.Add(
                 new SortDescription("StartDate", ListSortDirection.Ascending));
+            NotifyUpdate();
         }
 
         private void RemoveSorting(object sender, RoutedEventArgs args)
         {
             _listingDataView.SortDescriptions.Clear();
+            NotifyUpdate();
         }
 
         private void AddFiltering(object sender, RoutedEventArgs args)
         {
             _listingDataView.Filter += ShowOnlyBargainsFilter;
+            NotifyUpdate();
         }
 
         private void RemoveFiltering(object sender, RoutedEventArgs args)
         {
             _listingDataView.Filter -= ShowOnlyBargainsFilter;
+            NotifyUpdate();
         }
     }
-}
+
+}