c# - OrderBy、ObservableCollection<动态>、ICompare

Question

我正在尝试对动态对象的 Observable 集合进行排序。我尝试实现 IComparer，但它告诉我无法实现动态接口(interface)。我现在卡住了。有什么想法可以实现吗？

我试过了

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

然后是 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>在编译时与 IComparer<object> 相同. That's why you can't implement it.

尝试实现 IComparer<object>相反，并转换为动态。

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);
    }

}