xaml 你好，世界
示例
这是WPF中XAML页面的简单示例。它由XAML中最常见的元素aGrid，aTextBlock和aButton组成。
<Window x:Class="FirstWpfApplication.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Title="MainWindow"
Height="350"
Width="525">
<Grid>
<TextBlock Text="欢迎使用XAML！"
FontSize="30"
Foreground="Black"
HorizontalAlignment="Center"
VerticalAlignment="Center"/>
<Button Content="你好，世界！"
Background="LightGray"
Foreground="Black"
FontSize="25"
Margin="0,100,0,0"
VerticalAlignment="Center"
HorizontalAlignment="Center"/>
</Grid>
</Window>