Binding 之ObjectDataProvider数据源

ObjectDataProvider数据源它可以把对象作为数据源提供给Binding,可用于绑定函数，

实例如下

 public partial class BindObiectDataProvider : Window
     {
         public BindObiectDataProvider()
         {
             InitializeComponent();
             SetBinding();
         }
         private void Button_Click(object sender, RoutedEventArgs e)
         {
             ObjectDataProvider odp = new ObjectDataProvider();
             odp.MethodName = "add";
             odp.ObjectInstance = new Calculator();
             odp.MethodParameters.Add("");
             odp.MethodParameters.Add("");
             MessageBox.Show(odp.Data.ToString());

         }
         private void SetBinding()
         {
             ObjectDataProvider odp = new ObjectDataProvider();//此类是把对象作为数据源提供给Binding
             odp.ObjectInstance = new Calculator();
             odp.MethodName = "add";//指定将要调用Calculator对象总的add方法
             odp.MethodParameters.Add("");//相当于告诉odp去调用含有二个参数的add可以用于区分重载，
             odp.MethodParameters.Add("");//类型敏感的因add参数为字符串，古此处也应字符串
             Binding bindingToArg1 = new Binding("MethodParameters[0]")//参数为绑定的路径
             {
                 Source = odp,
                 BindsDirectlyToSource = true,//告诉Binding对象只负责把从UI得到的数据写入Source(odp)而不是写入odp对象包装的Calculator对象中
                 UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged//枚举值，用于指定更新立即将值回传到Source
             };
             Binding bindingToArg2 = new Binding("MethodParameters[1]")
             {
                 Source = odp,
                 BindsDirectlyToSource = true,
                 UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
             };
             Binding bindResulate = new Binding(".") { Source = odp };
             this.textBoxArg1.SetBinding(TextBox.TextProperty, bindingToArg1);
             this.textBoxArg2.SetBinding(TextBox.TextProperty, bindingToArg2);
             this.textBoxResult.SetBinding(TextBox.TextProperty, bindResulate);
         }
     }

 <StackPanel>
        <Button Content="绑定非暴露的属性(此处为返回值）" Click="Button_Click"></Button>
        <TextBox Margin="" x:Name="textBoxArg1"></TextBox>
        <TextBox Margin="" x:Name="textBoxArg2"></TextBox>
        <TextBox Margin="" x:Name="textBoxResult"></TextBox>
    </StackPanel>

public  class Calculator
    {
      public string add(string str1,string str2)
      {
          double x = ;
          double y = ;
          double z = ;
          if(double.TryParse(str1,out x)&&double.TryParse(str2,out y))
          {
              z = x + y;
              return z.ToString();
          }
          return "Input Error";
      }
    }