WPF C#

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="WPF" Height="300" Width="500">

















text



//File:Window.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
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;
}
}
}
}