VB.net Overridable属性与c#虚拟属性不一样？

Question

那么它很简单,你有我的vb.net代码:

Public Class Class1
    Public Overridable ReadOnly Property Name() As String
        Get
            Return Nothing
        End Get
    End Property
End Class

Public Class Class2
    Inherits Class1
    Public Overloads ReadOnly Property Name() As String
        Get
            Return "Class2"
        End Get
    End Property
End Class

Module Module1
    Sub Main()
        Dim c2 As New Class2()
        Console.WriteLine(c2.Name)
        Dim c1 As Class1 = CType(c2, Class1)
        Console.WriteLine(c1.Name)
    End Sub
End Module

这里是c#代码:

class Class1
{
    public virtual string Name
    {
        get
        {
            return null;
        }
    }
}

class Class2 : Class1
{
    public override string Name
    {
        get
        {
            return "Class2";
        }
    }
}

class Program
{
    static void Main(string[] args)
    {
        Class2 c2 = new Class2();
        Console.WriteLine(c2.Name);
        Class1 c1 = (Class1)c2;
        Console.WriteLine(c1.Name);
    }
}

我确实让他们做同样的事情,但猜猜不要做什么!C#输出

等级2

等级2

VB.NET输出

等级2

{没有}

(它没有打印任何东西它只是打印一个空行)为什么vb.net在它的覆盖时去基类实现？

Answer 1

它应该是覆盖而不是超载吗？

Public Overrides ReadOnly Property Name() As String