标记属性

C#里的属性标签，现在还是不大明白，感觉上像是对某个方法的实现，或者是说有点像扩展方法。

使用步骤：

①自己定义的类继承一个预先会被调用的类

②用[] 的方式将消费者与刚自定义出来的这个类挂接起来

下面用一个WPF小实例说明下：

 1 <Window x:Class="XamlStudyDemo.MainWindow"
 2         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3         xmlns:local="clr-namespace:XamlStudyDemo"
 4         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 5         Title="MainWindow" Height="350" Width="525">
 6    
 7     <Window.Resources>
 8         <local:MyClass x:Key="demo" Name="老王" Age="29"  Child="小王" />
 9     </Window.Resources>
10     
11     
12     <Grid>
13     
14         <Button Width="60" Height="29" Click="Button_Click"></Button>
15      </Grid>
16 </Window>

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Windows;
 6 using System.Windows.Controls;
 7 using System.Windows.Data;
 8 using System.Windows.Documents;
 9 using System.Windows.Input;
10 using System.Windows.Media;
11 using System.Windows.Media.Imaging;
12 using System.Windows.Navigation;
13 using System.Windows.Shapes;
14 using System.ComponentModel;
15 
16 namespace XamlStudyDemo
17 {
18     /// <summary>
19     /// MainWindow.xaml 的交互逻辑
20     /// </summary>
21     public partial class MainWindow : Window
22     {
23         public MainWindow()
24         {
25             InitializeComponent();
26         }
27 
28         private void Button_Click(object sender, RoutedEventArgs e)
29         {
30             MyClass demo = this.FindResource("demo") as MyClass;
31             if (demo!=null)
32             {
33                 MessageBox.Show(demo.Child.Name);    
34             }
35             
36         }
37     }
38 
39     /// <summary>
40     /// 给属性标记   作者：王超
41     /// </summary>
42     [TypeConverterAttribute(typeof(CurrConverter))]
43     public class MyClass
44     {
45         public string Name { get; set; }
46         public string Age { get; set; }
47         public MyClass Child { get; set; }
48     }
49 
50     /// <summary>
51     /// 定制类型转换器  作者：王超
52     /// </summary>
53     public class CurrConverter : TypeConverter 
54     {
55         public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
56         {
57             string name = value.ToString();
58             MyClass myclass = new MyClass();
59             myclass.Name = name;
60             return myclass;
61         }
62     }
63 
64 
65 }