VB.NET必须实现错误

Question

我只是将C＃函数转换为VB.NET函数，但不知怎的，我得到了一些错误。下面是我的C＃功能。

public abstract class BaseFilterControl: UserControl,IFilterControl
{
    public string PropertyName { get; set; }

    public FilterDescriptorBase AssociatedDescriptor { get; set; }

    public bool IsFirst { get; set; }

    public abstract FilterDescriptorBase BuildDescriptor();

    protected abstract void Initialize();
}

以下是我目前的VB功能

Public MustInherit Class BaseFilterControl
    Inherits UserControl
    Implements IFilterControl

    Public Property PropertyName As String

    Public Property AssociatedDescriptor As FilterDescriptorBase

    Public Property IsFirst As Boolean

    Public MustOverride Function BuildDescriptor() As FilterDescriptorBase

    Protected MustOverride Sub Initialize()
End Class

我收到了这个错误：

BaseFilterControl must implement Function BuildDescriptor() As FilterDescriptorBase.

任何想法。请帮忙。感谢

Answer 1

一种实现接口方法的抽象方法。在VB中，您只需要指定该函数实现接口函数：

Public MustOverride Function BuildDescriptor() As FilterDescriptorBase Implements IFilterControl.BuildDescriptor

您可能需要添加更多＆＃34; Implements＆＃34;其他方法的条款 - 我不熟悉IFilterControl接口。