Add a Key to NumericUpDown Style (#1065)

* Add a Key to NumericUpDown Style

add the key to be used with "MahApps:DataGridNumericUpDownColumn" "EditingElementStyle" to avoid the textbox Width problem

* add TargetType to NumericUpDown new key

add "TargetType" to "NumericUpDown" new key "MaterialDesignNumericUpDown" to automatically apply the style to all "NumericUpDown" controls

MaterialDesignThemes.MahApps/Themes/MaterialDesignTheme.MahApps.Defaults.xaml

@@ -10,5 +10,6 @@
         <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.MahApps;component/Themes/MaterialDesignTheme.MahApps.WindowCommands.xaml" />
     </ResourceDictionary.MergedDictionaries>
 
+    <Style TargetType="{x:Type controls:NumericUpDown}" BasedOn="{StaticResource MaterialDesignNumericUpDown}" />
     <Style TargetType="{x:Type controls:RangeSlider}" BasedOn="{StaticResource MaterialDesignRangeSlider}" />
-</ResourceDictionary>
+</ResourceDictionary>

MaterialDesignThemes.MahApps/Themes/MaterialDesignTheme.MahApps.NumericUpDown.xaml

@@ -5,7 +5,7 @@
 
     <mahShared:ThicknessBindingConverter x:Key="ThicknessBindingConverter" />
 
-    <Style TargetType="{x:Type mah:NumericUpDown}">
+    <Style TargetType="{x:Type mah:NumericUpDown}" x:Key="MaterialDesignNumericUpDown">
         <Setter Property="BorderThickness" Value="0,0,0,2" />
         <Setter Property="mah:ControlsHelper.FocusBorderBrush" Value="{DynamicResource TextBoxFocusBorderBrush}" />
         <Setter Property="mah:ControlsHelper.MouseOverBorderBrush" Value="{DynamicResource TextBoxMouseOverBorderBrush}" />
@@ -187,4 +187,4 @@
         <Setter Property="UpDownButtonsWidth" Value="22" />
         <Setter Property="Validation.ErrorTemplate" Value="{DynamicResource ValidationErrorTemplate}" />
     </Style>
-</ResourceDictionary>
+</ResourceDictionary>