主题：.net转为vb后提示错误

Try   

    Using stream As Stream = request.GetRequestStream()

        Dim data As Byte() = Encoding.UTF8.GetBytes(postBody)

        stream.Write(data, 0, data.Length)

    End Using

    

    Dim response As HttpWebResponse = TryCast(request.GetResponse(), HttpWebResponse)

    

    Using reader As StreamReader = New StreamReader(response.GetResponseStream(), Encoding.UTF8)

        Dim result As String = reader.ReadToEnd()

        Return result

    End Using

    

Catch ex As Exception

    Return ex.Message

End Try