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

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

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

  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：

 

 

 

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}" />