silverlight 数据绑定简单示例(markup extension)

水深无声 2021-12-16 20:21 214阅读 0赞

这个例子中被绑定的数据是一个owner类的实例，现在silverlight项目中添加一个owner类

![ExpandedBlockStart.gif][]Class Owner

public class Owner  
    \{  
        public int OwnerId \{ get; set; \}  
        public string FirstName \{ get; set; \}  
        public string LastName \{ get; set; \}  
        public string Address \{ get; set; \}  
        public string ZipCode \{ get; set; \}  
        public string City \{ get; set; \}  
        public string State \{ get; set; \}  
        public string Country \{ get; set; \}  
        public DateTime BirthDate \{ get; set; \}  
        public DateTime CustomerSince \{ get; set; \}  
        public string ImageName \{ get; set; \}  
        public DateTime LastActivityDate \{ get; set; \}  
        public double CurrentBalance \{ get; set; \}  
        public double LastActivityAmount \{ get; set; \}  
    \}

然后在MainPage.xaml.cs中创建一个Owner类的实例

![ExpandedBlockStart.gif][]MainPage.xaml.cs

public  MainPage()  
        \{  
            InitializeComponent();  
            InitializeOwner();  
        \}  
  
         private   void  InitializeOwner()  
        \{  
            owner  =   new  Owner();  
            owner.OwnerId  =   1234567 ;  
            owner.FirstName  =   " Zhu " ;  
            owner.LastName  =   " jz " ;  
            owner.Address  =   " ChaoYang BJ " ;  
            owner.ZipCode  =   " 100001 " ;  
            owner.City  =   " BeiJing " ;  
            owner.Country  =   " China " ;  
            owner.State  =   " BeiJing " ;  
            owner.ImageName  =   " wo.jpg " ;  
            owner.LastActivityAmount  =   100 ;  
            owner.LastActivityDate  =  DateTime.Today;  
            owner.CurrentBalance  =   1234.56 ;  
            owner.BirthDate  =   new  DateTime( 1986 ,  6 ,  8 );  
            owner.CustomerSince  =   new  DateTime( 2009 ,  12 ,  20 );  
        \}

到此，已经通过使用扩展标识语法（*Markup* *Extension*）实现了绑定到TextBlock的Text属性。就差最后一步，将Owner类实例绑定到控件，由下面代码来实现：

public MainPage()

\{  
            InitializeComponent();  
            InitializeOwner();  
            OwnerDetailsGrid.DataContext  =  owner;  
        \}

效果如下：

![sldatabinding1.jpg][]

回过头来再看XAML代码，上面说过，这儿是通过扩展标识实现TextBlock的数据绑定：

<TextBlock Text="\{Binding CustomerSince\}" />

实际上这是一种缩写写法，完整的绑定语法如下：

<TargetControl TargetProperty="\{Binding SourceProperty,SomeBindingProperties\}" />

转载于:https://www.cnblogs.com/zjz008/archive/2010/06/19/1760718.html

[ExpandedBlockStart.gif]: /images/20211214/5c2093b4009c46078aa1e5c485e3d9b3.png
[sldatabinding1.jpg]: /images/20211214/d8226b328175430195ed2a1bc9332acd.png