转自;http://blog.csdn.net/lisenyang/article/details/18312199

1.控件与控件间的双向绑定

WPF还支持控件作为数据源,

上面代码就可以实现控件之间的双向绑定,我们发现我们的绑定数据源不是Source,而是ElementName.

当然我们也可以使用代码来实现

Binding binding = new Binding("Text") { Source = this.txt_Source };            this.txt_Target.SetBinding(TextBox.TextProperty, binding);

使用代码绑定我们依然使用的Source来绑定数据源

2.多级路径

WPF支持多级路径,也就是我们通俗的说“点”下去。

我们改下上面的代码

 Binding binding = new Binding("Text.Length") { Source =this.txt_Source,Mode = BindingMode.OneWay }; this.txt_Target.SetBinding(TextBox.TextProperty, binding);

注意:因为源数据和目标数据无法做到匹配,所以无法双向绑定。

我们可以看到我们绑定的数据是Text属性中的Length属性,这就是我们所谓的多级路径.

3.索引绑定

我们知道，集合类型是索引器(Indexer)又称为带参属性。既然是属性，索引器也能作为Path来使用,比如我们想让一个TextBox显示另外一个TextBox的第1个字符

Binding binding = new Binding("Text[1]") { Source =this.txt_Source,Mode = BindingMode.OneWay };            this.txt_Target.SetBinding(TextBox.TextProperty, binding);

4.集合绑定

当使用一个集合或者DataView做为数据源时，如果我们想把它默认的元素做为数据源使用，则需要使用下面的语法:

List
     
       list = new List
      
       () { "狗娃","狗剩2"};  txt_List1.SetBinding(TextBox.TextProperty, new Binding("/") { Source = list, Mode = BindingMode.OneTime });  txt_List2.SetBinding(TextBox.TextProperty, new Binding("/[1]") { Source = list,Mode = BindingMode.OneTime });  txt_List3.SetBinding(TextBox.TextProperty, new Binding("/Length") { Source = list, Mode = BindingMode.OneTime });

效果如下

如果想要绑定绑定第二个元素,则直接使用"点"即可

List
     
       list = new List
      
       () { "狗娃","狗剩2"};  txt_List1.SetBinding(TextBox.TextProperty, new Binding("[1]") { Source = list, Mode = BindingMode.OneTime });  txt_List2.SetBinding(TextBox.TextProperty, new Binding("[1].[1]") { Source = list,Mode = BindingMode.OneTime });  txt_List3.SetBinding(TextBox.TextProperty, new Binding("[1].Length") { Source = list, Mode = BindingMode.OneTime });

如果想把子集集合中元素作为Path,可以使用多级斜线方法(一路"斜线"下去);

我们创建一个省市区关系的类型

public  class Province    {        public string Name { get; set; }        public IList
     
       Citys { get; set; }    }    public class City    {        public string Name { get; set; }        public IList
      
        Districts { get; set; }    }    public class District    {        public string Name { get; set; }    }

然后我们使用多级斜线进行绑定

List
     
       list = new List
      
       ()            {                new Province                {                    Name ="河北",                    Citys = new List
       
                            {                        new City                        {                            Name = "邯郸",                            Districts = new List
        
         { new District { Name="邯山区"} }                        } } } };  txt_List1.SetBinding(TextBox.TextProperty, new Binding("/Name") { Source = list, Mode = BindingMode.OneTime });  txt_List2.SetBinding(TextBox.TextProperty, new Binding("/Citys/Name") { Source = list, Mode = BindingMode.OneTime });  txt_List3.SetBinding(TextBox.TextProperty, new Binding("/Citys/Districts/Name") { Source = list, Mode = BindingMode.OneTime });

当然也可以使用多级"点"进行绑定

txt_List1.SetBinding(TextBox.TextProperty, new Binding("[0].Name") { Source = list, Mode = BindingMode.OneTime }); txt_List2.SetBinding(TextBox.TextProperty, new Binding("[0].Citys[0].Name") { Source = list, Mode = BindingMode.OneTime }); txt_List3.SetBinding(TextBox.TextProperty, new Binding("[0].Citys[0].Districts[0].Name") { Source = list, Mode = BindingMode.OneTime });