From f4eb53330c4b9a17abf575726fa36fa52abce2d0 Mon Sep 17 00:00:00 2001
From: Max Katz <maxkatz6@outlook.com>
Date: Wed, 2 Dec 2020 18:18:17 -0500
Subject: [PATCH] Add missing DataGridRowHeader template for DataGrid

---
 .../Themes/Default.xaml                       | 29 +++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/src/Avalonia.Controls.DataGrid/Themes/Default.xaml b/src/Avalonia.Controls.DataGrid/Themes/Default.xaml
index cf062e0920..09d19c8e43 100644
--- a/src/Avalonia.Controls.DataGrid/Themes/Default.xaml
+++ b/src/Avalonia.Controls.DataGrid/Themes/Default.xaml
@@ -137,12 +137,37 @@
   </Style>
 
   <Style Selector="DataGridRowHeader">
+    <Setter Property="Focusable" Value="False" />
     <Setter Property="Template">
       <ControlTemplate>
         <Grid x:Name="PART_Root"
-        RowDefinitions="*,*,Auto"
-        ColumnDefinitions="Auto,*">
+              RowDefinitions="*,*,Auto"
+              ColumnDefinitions="Auto,*">
+          <Border Grid.RowSpan="3"
+                  Grid.ColumnSpan="2"
+                  BorderBrush="{TemplateBinding SeparatorBrush}"
+                  BorderThickness="0,0,1,0">
+            <Grid Background="{TemplateBinding Background}">
+              <Rectangle x:Name="RowInvalidVisualElement"
+                         Stretch="Fill" />
+              <Rectangle x:Name="BackgroundRectangle"
+                         Stretch="Fill" />
+            </Grid>
+          </Border>
+          <Rectangle x:Name="HorizontalSeparator"
+                     Grid.Row="2"
+                     Grid.ColumnSpan="2"
+                     Height="1"
+                     Margin="1,0,1,0"
+                     HorizontalAlignment="Stretch"
+                     Fill="{TemplateBinding SeparatorBrush}"
+                     IsVisible="{TemplateBinding AreSeparatorsVisible}" />
 
+          <ContentPresenter Grid.RowSpan="2"
+                            Grid.Column="1"
+                            HorizontalAlignment="Center"
+                            VerticalAlignment="Center"
+                            Content="{TemplateBinding Content}" />
         </Grid>
       </ControlTemplate>
     </Setter>