VB.net的Overridable属性与c#虚拟属性不同? [英] VB.net Overridable property not same as c# Virtual property?

问题描述

很简单，这里有我的vb.net代码:

Well its simple here you have my vb.net code:

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

下面是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，但猜猜什么都不做！ C#输出

i did expekt them to do the same thing but guess what thay dont! C# Output

Class2

Class2

VB.NET输出

Class2

{无}

(它不会打印任何内容，只会打印一个空行) 为什么在重写vb.net时将其用于基类实现?

(It dosent print nothing it just prints an empty line) Why does vb.net go for the base class implementation when its overriden?

推荐答案

应该是重写而不是重载吗?

Should it be overrides and not overloads?

Public Overrides ReadOnly Property Name() As String

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