<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<Grid>
<StackPanel>
<TextBox x:Name="uv" PreviewKeyDown="TextBox_PreviewKeyDown" />
</StackPanel>
</Grid>
</Window>
//File:Window1.xaml.cs
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
namespace WpfApplication1
{
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
DataContext = this;
}
//
private void TextBox_PreviewKeyDown(object sender, RoutedEventArgs e)
{
TextBox textBox = sender as TextBox;
if (textBox != null)
{
textBox.Foreground = Brushes.Firebrick;
}
}
}
}
|
