Visual Basic.NET - WebClient UploadData Asynch o httWebClient

Public Function MakeRequest(pBaseUrl As String, pMetodo As String, pToken As String, pJson As String) As MktApiResponse

        Try

            Dim request As New WebClient

            request.Headers.Add("content-type", "application/json")

            request.Headers.Add("Authorization", "Basic " & pToken)

            If Strings.InStrRev(pBaseUrl, "/") = 1 Then

                request.BaseAddress = pBaseUrl

            Else

                request.BaseAddress = pBaseUrl & "/"

            End If

            Dim response As String = Encoding.ASCII.GetString(request.UploadData(pMetodo, Encoding.Default.GetBytes(pJson)))

            Dim js As New JavaScriptSerializer()

            Dim ApiResponse As MktApiResponse = js.Deserialize(Of MktApiResponse)(response)

            Return ApiResponse

        Catch ex As Exception

            Dim BadApiResponse As New MktApiResponse

            BadApiResponse.Message = ex.Message

            BadApiResponse.HasError = True

            BadApiResponse.Code = -1

            Return BadApiResponse

        End Try

    End Function