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Class ‘QueryParameterComparer’ must implement Function Compare.2个
我得到错误：类’QueryParameterComparer’必须为接口’System.Collections.Generic.IComparer(Of QueryParameter)’实现’Function Compare(x As QueryParameter,y As QueryParameter)As Integer’.
我得到错误：类’QueryParameterComparer’必须为接口’System.Collections.Generic.IComparer(Of QueryParameter)’实现’Function Compare(x As QueryParameter,y As QueryParameter)As Integer’.
在这个类定义上：
Protected Class QueryParameterComparer
Implements IComparer(Of QueryParameter)
Public Function Compare(x As QueryParameter,y As QueryParameter) As Integer
If x.Name = y.Name Then
Return String.Compare(x.Value,y.Value)
Else
Return String.Compare(x.Name,y.Name)
End If
End Function
End Class
我也尝试过完全写出来：
Protected Class QueryParameterComparer
Implements System.Collections.Generic.IComparer(Of QueryParameter)
Public Function Compare(x As QueryParameter,y.Name)
End If
End Function
End Class
我错过了什么？
与c#不同,其中方法的名称必须与接口中的名称相匹配,在VB.NET中,必须始终使用每个成员上的Implements关键字明确声明所有接口实现：
Protected Class QueryParameterComparer
Implements IComparer(Of QueryParameter)
Public Function Compare(x As QueryParameter,y As QueryParameter) As Integer Implements IComparer(Of QueryParameter).Compare
' ...
End Function
End Class