custom padding on grid view

Author: ButchersBoy

MainDemo.Wpf/Grids.xaml

@@ -17,7 +17,8 @@
     <ScrollViewer>
         <StackPanel>
             <TextBlock>Custom Columns</TextBlock>
-            <DataGrid Margin="0 8 0 0" ItemsSource="{Binding Items3}" CanUserSortColumns="True" CanUserAddRows="False" AutoGenerateColumns="False" HeadersVisibility="All">
+            <DataGrid Margin="0 8 0 0" ItemsSource="{Binding Items3}" CanUserSortColumns="True" CanUserAddRows="False" AutoGenerateColumns="False"
+                      wpf:DataGridAssist.CellPadding="13 8 8 8" wpf:DataGridAssist.ColumnHeaderPadding="8">
                 <DataGrid.Columns>
                     <DataGridCheckBoxColumn Binding="{Binding IsSelected}" 
                                                 ElementStyle="{StaticResource MaterialDesignDataGridCheckBoxColumnStyle}"
@@ -69,6 +70,10 @@
             </DataGrid>
             <TextBlock Margin="0 24 0 0">Auto Generated Columns</TextBlock>
             <DataGrid  Margin="0 8 0 0" ItemsSource="{Binding Items3}" CanUserSortColumns="True" CanUserAddRows="False" />
+            <TextBlock Margin="0 24 0 0">Custom Padding</TextBlock>
+            <DataGrid  Margin="0 8 0 0" ItemsSource="{Binding Items3}" CanUserSortColumns="True" CanUserAddRows="False"
+                       wpf:DataGridAssist.CellPadding="4 2 2 2" wpf:DataGridAssist.ColumnHeaderPadding="4 2 2 2"
+                       />
         </StackPanel>
     </ScrollViewer>
 </UserControl>

MaterialDesignThemes.Wpf/DataGridAssist.cs

@@ -78,6 +78,32 @@ public static void SetAutoGeneratedEditingTextStyle(DependencyObject element, St
         public static Style GetAutoGeneratedEditingTextStyle(DependencyObject element)
         {
             return (Style) element.GetValue(AutoGeneratedEditingTextStyleProperty);
-        }        
+        }
+
+        public static readonly DependencyProperty CellPaddingProperty = DependencyProperty.RegisterAttached(
+            "CellPadding", typeof (Thickness), typeof (DataGridAssist), new FrameworkPropertyMetadata(new Thickness(13, 8, 8, 8), FrameworkPropertyMetadataOptions.Inherits));
+
+        public static void SetCellPadding(DependencyObject element, Thickness value)
+        {
+            element.SetValue(CellPaddingProperty, value);
+        }
+
+        public static Thickness GetCellPadding(DependencyObject element)
+        {
+            return (Thickness) element.GetValue(CellPaddingProperty);
+        }
+
+        public static readonly DependencyProperty ColumnHeaderPaddingProperty = DependencyProperty.RegisterAttached(
+            "ColumnHeaderPadding", typeof (Thickness), typeof (DataGridAssist), new FrameworkPropertyMetadata(new Thickness(8), FrameworkPropertyMetadataOptions.Inherits));
+
+        public static void SetColumnHeaderPadding(DependencyObject element, Thickness value)
+        {
+            element.SetValue(ColumnHeaderPaddingProperty, value);
+        }
+
+        public static Thickness GetColumnHeaderPadding(DependencyObject element)
+        {
+            return (Thickness) element.GetValue(ColumnHeaderPaddingProperty);
+        }
     }
 }

MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.DataGrid.xaml

@@ -136,7 +136,7 @@
 
     <Style x:Key="MaterialDesignDataGridCell" TargetType="{x:Type DataGridCell}">
         <Setter Property="TextBlock.FontSize" Value="13" />
-        <Setter Property="Padding" Value="13 8 8 8" />
+        <Setter Property="Padding" Value="{Binding RelativeSource={RelativeSource Self}, Path=(wpf:DataGridAssist.CellPadding)}" />
         <Setter Property="Background" Value="Transparent"/>
         <Setter Property="BorderBrush" Value="Transparent"/>
         <Setter Property="Template">
@@ -190,7 +190,7 @@
         <Setter Property="VerticalContentAlignment" Value="Center"/>
         <Setter Property="TextBlock.FontSize" Value="12" />
         <Setter Property="TextBlock.FontWeight" Value="Medium" />
-        <Setter Property="Padding" Value="8 8 8 8" />
+        <Setter Property="Padding" Value="{Binding RelativeSource={RelativeSource Self}, Path=(wpf:DataGridAssist.ColumnHeaderPadding)}" />
         <Setter Property="Foreground" Value="{DynamicResource MaterialDesignColumnHeader}" />
         <Setter Property="Template">
             <Setter.Value>