Question

我有一个通用接口，即使我在实现它时声明了类型，它说实现的类错过了所有成员的实现。

界面

Interface IBuilder(Of T)
    Function Number(ByVal literal As String) As T
End Interface

工具

Class BracketsBuilder
    Implements IBuilder(Of String)
    Public Function Number(number__1 As String) As String
        Return number__1
    End Function
End Class

当我尝试运行代码时，我得到了

Class＆＃39; BracketsBuilder ＆＃39;必须实现＆＃39; 功能编号（字面值为字符串）作为字符串＆＃39; for interface＆＃39; IBuilder （Of String）＆＃39;。

Answer 1

您需要在Number函数的声明上指明它是接口中定义的Number函数的实现

Interface IBuilder(Of T)
    Function Number(ByVal literal As String) As T
End Interface

Class BracketsBuilder
    Implements IBuilder(Of String)

    Public Function Number(number__1 As String) As String Implements IBuilder(Of String).Number
        Return number__1
    End Function
End Class

如果您输入

Class BracketsBuilder
    Implements IBuilder(Of String)

然后按Enter键，Visual Studio将为您添加Function声明。

通用接口缺少实现

1 个答案: