silverlight 資料繫結簡單樣本(markup extension)

這個例子中被繫結資料是一個owner類的執行個體，現在silverlight項目中添加一個owner類

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; }
    }

 

 

然後在MainPage.xaml.cs中建立一個Owner類的執行個體

 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，已經通過使用擴充標識文法（Markup Extension）實現了綁定到TextBlock的Text屬性。就差最後一步，將Owner類執行個體綁定到控制項，由下面代碼來實現：

        public MainPage()

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

 

 

 效果如下：

 

 

 

回過頭來再看XAML代碼，上面說過，這兒是通過擴充標識實現TextBlock的資料繫結：

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

 

實際上這是一種縮寫寫法，完整的綁定文法如下：

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