VB.NET必須實現錯誤

Question

我只是將C＃函數轉換爲VB.NET函數，但不知何故，我得到一些錯誤。以下是我的C＃函數。

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(); 
} 

下面是我目前的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 

我得到這個錯誤：

BaseFilterControl must implement Function BuildDescriptor() As FilterDescriptorBase. 

任何想法。請幫忙。謝謝

Answer 1

實現接口方法的抽象方法。在VB中，你只需要指定該功能實現的接口功能：

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

您可能需要添加更多的「器具」條款的其他方法 - 我不熟悉IFilterControl接口。