OrderBy，ObservableCollection <dynamic>，ICompare

Question

我想排序動態對象的Observable集合。我試圖實現IComparer，但它告訴我，我不能實現一個動態接口。我現在卡住了。任何想法如何實現這一點？

我嘗試這樣

list.OrderByDescending(x => x, new DynamicSerializableComparer()); 

然後的IComparer

public class DynamicSerializableComparer : IComparer<dynamic> 
     { 
      string _property; 

      public DynamicSerializableComparer(string property) 
      { 
       _property = property; 
      } 

      public int Compare(dynamic stringA, dynamic stringB) 
      { 
       string valueA = stringA.GetType().GetProperty(_property).GetValue(); 
       string valueB = stringB.GetType().GetProperty(_property).GetValue(); 

       return String.Compare(valueA, valueB); 
      } 

     } 

Answer 1

IComparer<dynamic>是，在編譯時，相同IComparer<object>。 That's why you can't implement it.

嘗試實施IComparer<object>代替，並轉換爲動態。

public class DynamicSerializableComparer : IComparer<object> 
{ 
    string _property; 

    public DynamicSerializableComparer(string property) 
    { 
     _property = property; 
    } 

    public int Compare(object stringA, object stringB) 
    { 
     string valueA = stringA.GetType().GetProperty(_property).GetValue(); 
     string valueB = stringB.GetType().GetProperty(_property).GetValue(); 

     return String.Compare(valueA, valueB); 
    } 

}