Allow scrolling while inside DataGrid

Author: IvenBach

Rubberduck.Core/UI/Settings/AutoCompleteSettings.xaml

@@ -51,7 +51,8 @@
             <RowDefinition Height="*" />
             <RowDefinition Height="32" />
         </Grid.RowDefinitions>
-        <ScrollViewer Grid.Row="0">
+        <ScrollViewer x:Name="ScrollViewer"
+                      Grid.Row="0">
             <StackPanel Margin="5,5,5,0" ScrollViewer.VerticalScrollBarVisibility="Auto">
                 <Label Background="DarkGray"
                        HorizontalContentAlignment="Stretch"
@@ -93,7 +94,7 @@
                     <CheckBox IsEnabled="{Binding IsEnabled}" Margin="10,10" IsChecked="{Binding EnableSmartConcat}" HorizontalAlignment="Center" Content="{Resx ResxName=Rubberduck.Resources.Settings.AutoCompletesPage, Key=EnableSmartConcat}" />
                 </WrapPanel>
                 <Border BorderBrush="DarkGray" BorderThickness="1" CornerRadius="2">
-                    <DataGrid Name="AutoCompleteSettingsGrid"
+                    <DataGrid PreviewMouseWheel="AutoCompleteSettingsGrid_PreviewMouseWheel"
                               ItemsSource="{Binding Settings}"
                               AutoGenerateColumns="False"
                               CanUserReorderColumns="False"

Rubberduck.Core/UI/Settings/AutoCompleteSettings.xaml.cs

@@ -31,5 +31,25 @@ public AutoCompleteSettings(ISettingsViewModel vm) : this()
         }
 
         public ISettingsViewModel ViewModel => DataContext as ISettingsViewModel;
+
+        private void AutoCompleteSettingsGrid_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
+        {
+            if (e.Delta > 0)
+            {
+                for (int i = 0; i < 3; i++)
+                {
+                    ScrollViewer.LineUp();
+                }
+            }
+            else
+            {
+                for (int i = 0; i < 3; i++)
+                {
+                    ScrollViewer.LineDown();
+                }
+            }
+
+            e.Handled = true;
+        }
     }
 }