无法将属性作为枚举绑定到wpf mvvm中的combobox

public class EnumWrapper<T>
{
    public T Value { get; set; }
    public string DisplayName { get; set; }
}

public class ViewModel
{
    public ObservableCollection<EnumWrapper<MyEnum>> MyEnumValues { get; set; }

    public ViewModel()
    {
        MyEnumValues = new ObservableCollection<EnumWrapper<MyEnum>>();
        foreach (MyEnum value in Enum.GetValues(typeof(MyEnum)))
        {
            MyEnumValues.Add(new EnumWrapper<MyEnum>
            {
                Value = value,
                DisplayName = value.ToString()
            });
        }
    }
}

<ComboBox ItemsSource="{Binding MyEnumValues}"
          DisplayMemberPath="DisplayName"
          SelectedValue="{Binding SelectedEnumValue}" />