vb.net - 类 ' 不能被索引，因为它没有默认属性

Question

我收到以下错误 Class 'PropGenie_WebService.Branch' cannot be indexed because it has no default property.我不知道为什么。我用谷歌搜索但没有得到正确的解释或修复。欢迎 C# 帮助。

我在 branch.vb 类中的代码:

Public Function Update() As Branch
    Return Update(Me, Path) 'error at update.
End Function

在我的基类(Resources.vb)中，我有:

Public Shared Function Update(Of T As {Resources, New})(resource As T, path As String) As T
        Dim request = CreateRequest(path & "/{id}", Method.PATCH)
        request.AddUrlSegment("id", resource.Id.ToString(CultureInfo.InvariantCulture))
        request.AddBody(resource)
        Dim Client = CreateClient()
        Dim responce = Client.Execute(Of T)(request)
        If responce.StatusCode <> HttpStatusCode.OK Then
            Throw New InvalidOperationException("Update Failed" & Convert.ToString(responce.StatusCode))
        End If
        Return responce.Data
    End Function

Answer 1

您需要指定共享函数所在的类，否则它会尝试使用 Update您所在的对象中的函数。

Public Function Update() As Branch
    Return Resources.Update(Me, Path)
End Function