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    copied!<p>The idea is to override default <code>ContextMenu</code> template.</p> <p>Result:</p> <p><img src="https://i.stack.imgur.com/4EpSF.png" alt="enter image description here"></p> <p>Add reference to <code>PresentationFramework.Aero.dll</code> and try this code:</p> <pre><code>&lt;Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:System="clr-namespace:System;assembly=mscorlib" xmlns:theme="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero" Title="MainWindow" Height="350" Width="525"&gt; &lt;Window.Resources&gt; &lt;Style x:Key="MenuStyle" TargetType="{x:Type ContextMenu}" BasedOn="{StaticResource {x:Type ContextMenu}}"&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="{x:Type ContextMenu}"&gt; &lt;StackPanel&gt; &lt;theme:SystemDropShadowChrome Name="Shdw2" Color="Transparent" SnapsToDevicePixels="true"&gt; &lt;Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"&gt; &lt;StackPanel Orientation="Horizontal"&gt; &lt;TextBox Text="{Binding ShiftValue, UpdateSourceTrigger=PropertyChanged}" Width="30" Margin="4"&gt; &lt;TextBox.InputBindings&gt; &lt;KeyBinding Command="{Binding ShiftCommand}" Key="Enter" /&gt; &lt;/TextBox.InputBindings&gt; &lt;/TextBox&gt; &lt;Button Content="Shift" Margin="0,4,0,4" Command="{Binding ShiftCommand}" /&gt; &lt;/StackPanel&gt; &lt;/Border&gt; &lt;/theme:SystemDropShadowChrome&gt; &lt;theme:SystemDropShadowChrome Name="Shdw" Color="Transparent" SnapsToDevicePixels="true"&gt; &lt;Border Name="ContextMenuBorder" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"&gt; &lt;Grid&gt; &lt;Rectangle Fill="#F1F1F1" HorizontalAlignment="Left" Width="28" Margin="2" RadiusX="2" RadiusY="2" /&gt; &lt;Rectangle HorizontalAlignment="Left" Width="1" Margin="30,2,0,2" Fill="#E2E3E3" /&gt; &lt;Rectangle HorizontalAlignment="Left" Width="1" Margin="31,2,0,2" Fill="White" /&gt; &lt;ScrollViewer Name="ContextMenuScrollViewer" CanContentScroll="true" Grid.ColumnSpan="2" Margin="1,0" Style="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type FrameworkElement}, ResourceId=MenuScrollViewer}}"&gt; &lt;Grid RenderOptions.ClearTypeHint="Enabled"&gt; &lt;Canvas Height="0" Width="0" HorizontalAlignment="Left" VerticalAlignment="Top"&gt; &lt;Rectangle Height="{Binding ElementName=ContextMenuBorder,Path=ActualHeight}" Width="{Binding ElementName=ContextMenuBorder,Path=ActualWidth}" Fill="{Binding ElementName=ContextMenuBorder,Path=Background}" /&gt; &lt;/Canvas&gt; &lt;ItemsPresenter Name="ItemsPresenter" Margin="{TemplateBinding Padding}" KeyboardNavigation.DirectionalNavigation="Cycle" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" /&gt; &lt;/Grid&gt; &lt;/ScrollViewer&gt; &lt;/Grid&gt; &lt;/Border&gt; &lt;/theme:SystemDropShadowChrome&gt; &lt;/StackPanel&gt; &lt;ControlTemplate.Triggers&gt; &lt;Trigger Property="HasDropShadow" Value="true"&gt; &lt;Setter TargetName="Shdw" Property="Margin" Value="0,0,5,5" /&gt; &lt;Setter TargetName="Shdw" Property="Color" Value="#71000000" /&gt; &lt;Setter TargetName="Shdw2" Property="Margin" Value="0,0,5,5" /&gt; &lt;Setter TargetName="Shdw2" Property="Color" Value="#71000000" /&gt; &lt;/Trigger&gt; &lt;/ControlTemplate.Triggers&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; &lt;/Window.Resources&gt; &lt;Grid&gt; &lt;DataGrid IsReadOnly="True"&gt; &lt;DataGrid.Columns&gt; &lt;DataGridTextColumn Binding="{Binding}" /&gt; &lt;/DataGrid.Columns&gt; &lt;DataGrid.ContextMenu&gt; &lt;ContextMenu Style="{StaticResource MenuStyle}"&gt; &lt;MenuItem Header="Item 1"&gt;&lt;/MenuItem&gt; &lt;MenuItem Header="Item 2"&gt;&lt;/MenuItem&gt; &lt;MenuItem Header="Item 3"&gt;&lt;/MenuItem&gt; &lt;/ContextMenu&gt; &lt;/DataGrid.ContextMenu&gt; &lt;System:String&gt;One&lt;/System:String&gt; &lt;System:String&gt;Two&lt;/System:String&gt; &lt;System:String&gt;Three&lt;/System:String&gt; &lt;/DataGrid&gt; &lt;/Grid&gt; &lt;/Window&gt; </code></pre>
 

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