xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"<!--表示引入一组名称空间,presentation主要加载绘制界面相关的-->

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"<!--xaml编译和解析文件相关的。WPF默认可以有一个没有名称的名称空间.(默认名称空间)-->

x:Class="MyWpfApp.MainWindow"<!--对应的是，这个xmal文件对应的xmal.cs文件中的MainWindow类-->

xmlns:local="clr-namespace:MyWpfApp"<!--引用当前的名称空间-->

namespace MyWpfApp
{public class CurrentData{public CurrentData Data { get; set; }public string Name { get; set; }}
}

<Window.Resources> <local:CurrentData x:Key="test" Name=""/>
</Window.Resources>

<Grid><Rectangle Height="80" Width="100" Stroke="Black"/>
</Grid>

<Window.Resources><local:CurrentData x:Key="text" Name="t" Data="aaa" />
</Window.Resources>

    //第二步    [TypeConverterAttribute(typeof(NameToDataTypeConverter))]public class CurrentData{public CurrentData Data { get; set; }public string Name { get; set; }}//第一步public class NameToDataTypeConverter : TypeConverter{public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value){string name = value.ToString();CurrentData data = new CurrentData(){Name = name};return data;}}

<Grid><!--这种用‘/’直接结尾的,叫做空标签。这个标签不具有内容--><Button Height="80" Width="200" Click="Button_Click1" /><Button Height="80" Width="200" Click="Button_Click"><!--标签的内容--><Button.Content><!--属性的方式赋值--><Rectangle Width="20" Height="20" Stroke="Black" Fill="Green"></Rectangle></Button.Content></Button>
</Grid>

    <Window.Resources><sys:String x:Key="stringvalue">string value</sys:String></Window.Resources><Grid><!--{}大括号表示使用标签扩展--><TextBlock Height="100" Text="{StaticResource ResourceKey=stringvalue}"></TextBlock></Grid>

    <Grid><Button Height="20" Name="button" Width="200" Content="button" Click="Button_Click"></Button></Grid>

    /// <summary>/// MainWindow.xaml 的交互逻辑/// </summary>public partial class MainWindow : Window{public MainWindow(){InitializeComponent();}private void Button_Click(object sender, RoutedEventArgs e){MessageBox.Show("");}}

        public MainWindow(){InitializeComponent();this.button.Click += Button_Click;}