<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF" Height="100" Width="300"> <Grid> <TextBox FontSize="16" Height="23" Name="txtTextBox" > <TextBox.ContextMenu> <ContextMenu HasDropShadow="True" Opacity=".8"> <MenuItem Command="Cut" Header="Cu_t" /> <MenuItem Command="Copy" Header="_Copy" /> <MenuItem Command="Paste" Header="_Paste" /> <Separator/> <MenuItem Click="SelectAll_Click" Header="_Select All" /> <MenuItem Click="Clear_Click" Header="_Clear" /> <Separator/> <MenuItem Header="Format"> <MenuItem Click="TextStyle_Click" Header="_Normal" Name="miNormal"></MenuItem> <MenuItem Click="TextStyle_Click" FontWeight="Bold" Header="_Bold" Name="miBold"></MenuItem> <MenuItem Click="TextStyle_Click" FontStyle="Italic" Header="_Italic" Name="miItalic"></MenuItem> </MenuItem> </ContextMenu> </TextBox.ContextMenu> A TextBox control with ContextMenu. </TextBox> </Grid> </Window> //File:Window.xaml.cs using System.Windows; namespace WpfApplication1 { public partial class Window1 : Window { public Window1() { InitializeComponent(); } private void Clear_Click(object sender, RoutedEventArgs e) { txtTextBox.Clear(); } private void SelectAll_Click(object sender, RoutedEventArgs e) { txtTextBox.SelectAll(); } private void TextStyle_Click(object sender, RoutedEventArgs e) { if (sender == miNormal) { txtTextBox.FontWeight = FontWeights.Normal; txtTextBox.FontStyle = FontStyles.Normal; } else if (sender == miBold) { txtTextBox.FontWeight = FontWeights.Bold; } else if (sender == miItalic) { txtTextBox.FontStyle = FontStyles.Italic; } } } }