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¿Cómo pasar informes de progreso de la función interna a la función principal?

Question

Actualmente estoy tratando de pasar el progreso (usando Iprogress y Progress) de una función interna a la función principal. Todo funciona después de que la función interna se completa. Sin embargo, estoy recuperando / descargando algunos datos usando las API de EBay (servicio de búsqueda de eBay que es un servicio de descanso que devuelve datos en formato XML) y necesito pasar informes de progreso de la función interna a la principal durante la descarga de los datos XML recuperados /procesamiento de datos.

Aquí está el código de la función principal (un poco comienza a sobrecargarse, pero usted sabe lo que está pasando, comentó sobre la sensatez):

 Private Property a As Integer
        Get
            Return a_value
        End Get
        Set(value As Integer)
            a_value = value
            '' ReportProgress(value, Nothing)
        End Set
    End Property
    Private a_value As Integer
Public Async Function EvaluateItem(item As List(Of ItemInfo), evalprogress As IProgress(Of Integer), Optional ManualEvaluation As Boolean = False) As Task(Of List(Of EvaluationInfo))
    Dim notevaluatedcount As Integer = 0
    Dim iteminfo1 As ItemInfo = New ItemInfo
    Dim tmpiteminfo As List(Of ItemInfo) = New List(Of ItemInfo)
    Dim tmpiteminfo2 As List(Of ItemInfo) = New List(Of ItemInfo)
    Dim pricefunctions As ItemValuation = New ItemValuation
    Dim tmpevalinfo As EvaluationInfo = New EvaluationInfo
    Dim itemevalresultarr As List(Of EvaluationInfo) = New List(Of EvaluationInfo)
    Dim mode As Double
    Dim avg As Double
    Dim min As Double
    Dim max As Double
    Dim standarddev As Double
    Dim pricearr() As Double
    Dim autoitem As List(Of EvaluationInfo) = New List(Of EvaluationInfo)
    Dim itemse As New ItemInformation
    '' Dim itemsnoteval As New ItemInformation
    '' itemseval.itemsevaluated = New List(Of String)
    '' itemsnoteval.notevaluated = New List(Of String)
    Dim tmpnoteval As List(Of ItemInfo) = New List(Of ItemInfo)

    Dim ran As Boolean
    ''sort and store item condition information in evaluation table in database or by item.sort
    If item.Count > 1 And ManualEvaluation = True Then
        tmpiteminfo = SortByName(item)
        Await ClearEvalTable()
        tmpiteminfo2 = SortByCondition(tmpiteminfo)
        If CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess Then
            Await Task.Run(Function()

                               ''Await Task.Delay(1000)
                               If evalprogress IsNot Nothing Then
                                   ''ReportProgress(4, Nothing)
                                   evalprogress.Report(4)
                                   evalprogress.Report(5)
                               End If
                               '' tempCount += 1

                               Return 5
                           End Function)
        ElseIf CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess = False Then
            Await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, Function()

                                                                                                             ''Await Task.Delay(1000)
                                                                                                             If evalprogress IsNot Nothing Then
                                                                                                                 evalprogress.Report(4)
                                                                                                                 evalprogress.Report(5)
                                                                                                             End If
                                                                                                             '' tempCount += 1

                                                                                                             Return 5
                                                                                                         End Function)

        End If
        ''evalprogress.Report(5)
        '' MsgBox("condition count:" + tmpiteminfo2.Count.ToString)
    ElseIf item.Count > 1 And ManualEvaluation = False Then
        ''do nothing
    ElseIf item.Count = 1 And ManualEvaluation = True Then
        ''change this code to perform manual evaluation on one item.
        ''tmpiteminfo.Add(item.Item(0))
    End If
    ReDim pricearr(item.Count)

    If ManualEvaluation Then
        If ran = False Then
            Dim count As Integer
            For Each d As ItemInfo In tmpiteminfo
                count = count + 1
                If ItemValidation.ContainsValidCharacters(d.name) And ItemValidation.IsDouble(d.price) Then
                    ''decide whether to manually evaluate the item or automatically evaluate it.
                    Log("Item name: " + d.name + " price #: " + d.price.ToString)
                Else
                    Log("Item: " + d.name + " has invalid characters in its name. It will not be evaluated. Please remove the invalid characters to have the item evaluated." + "The item price may not be an integer. please fix this too (if applicable)")
                    iteminfo1.name = d.name
                    iteminfo1.price = 0
                    iteminfo1.evaluationSource = d.evaluationSource
                    iteminfo1.damaged = "NO"
                    iteminfo1.aquisitiondate = "1/1/1111"
                    iteminfo1.itempicture = Nothing
                    '' tmpnoteval.Add(iteminfo1)
                    tmpevalinfo.currentItem = iteminfo1.name
                    tmpevalinfo.evaluated = False
                    tmpevalinfo.evaluationcondition = d.itemcondition
                    itemevalresultarr.Add(tmpevalinfo)
                    ''  tmpnoteval.Add(iteminfo1)
                    notevaluatedcount += 1
                End If
                Select Case d.itemcondition
                    Case Is = ItemCondition.Broken
                        broken.Add(d.price)
                    Case Is = ItemCondition.LooksLikeNew
                        Lookslikenew.Add(d.price)
                        ''MsgBox("Looks like new price:" + d.price.ToString)
                    Case Is = ItemCondition.SomewhatUsed
                        somewhatused.Add(d.price)
                        ''  MsgBox("Somewhat Used price:" + d.price.ToString)
                    Case Is = ItemCondition.SomeDamage
                        damaged.Add(d.price)
                End Select
            Next
            ran = True
        End If

    Else
        ''Automatically evaluate item using different retailers i.e. Amazon, E-Bay, etc.
        ''use grabfromonlinesource multiple times to grab from each evaluation source used.
        Dim tmpevalitem As Task(Of List(Of EvaluationInfo))

        For i = 0 To item.Count - 1
            ''does once for each item 
            ''need to split it into conditions inside of grabfromonlinesource
            If ItemValidation.ContainsValidCharacters(item.Item(i).name) Then

                ''  evalprogress = New Progress(Of Integer)(Function(value) InlineAssignHelper(value, a))
                If CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess Then
                    Await Task.Run(Function()

                                       ''Await Task.Delay(1000)
                                       If evalprogress IsNot Nothing Then
                                           '' ReportProgress(10, Nothing)
                                           evalprogress.Report(10)
                                           ReportProgress(10, Nothing)
                                       End If
                                       '' tempCount += 1

                                       Return 10
                                   End Function)
                ElseIf CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess = False Then
                    Await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, Function()

                                                                                                                     ''Await Task.Delay(1000)
                                                                                                                     If evalprogress IsNot Nothing Then
                                                                                                                         evalprogress.Report(10)
                                                                                                                     End If
                                                                                                                     '' tempCount += 1

                                                                                                                     Return 10
                                                                                                                 End Function)

                End If

                tmpevalitem = GrabFromOnlineSource(item.Item(i).name, item.Item(i).evaluationSource, New Progress(Of Integer)(Function(value) InlineAssignHelper(a, value)))
                tmpevalitem.Wait()
                If CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess Then
                    Await Task.Run(Function()

                                       ''Await Task.Delay(1000)
                                       If evalprogress IsNot Nothing Then
                                           '' ReportProgress(70, Nothing)
                                           evalprogress.Report(70)
                                       End If
                                       '' tempCount += 1

                                       Return 70
                                   End Function)
                ElseIf CoreApplication.MainView.CoreWindow.Dispatcher.HasThreadAccess = False Then
                    Await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, Function()

                                                                                                                     ''Await Task.Delay(1000)
                                                                                                                     If evalprogress IsNot Nothing Then
                                                                                                                         ''evalprogress.Report(70)
                                                                                                                     End If
                                                                                                                     '' tempCount += 1

                                                                                                                     Return 70
                                                                                                                 End Function)

                End If
                '' ItemValuation.tmpProgressIndicator.Report(60)


                If tmpevalitem.Result IsNot Nothing Then
                    autoitem.AddRange(tmpevalitem.Result)
                Else
                    Continue For
                End If
            Else
                Dim tmpevalinfoauto As EvaluationInfo
                tmpevalinfoauto.currentItem = item.Item(i).name
                tmpevalinfoauto.evaluationcondition = item.Item(i).itemcondition
                autoitem.Add(tmpevalinfoauto)
            End If
        Next i
        autoitem.Add(Nothing) ''use nothing as an indicator of a new item.
    End If

    If ManualEvaluation Then
        Dim done(4) As Boolean
        done(0) = False
        done(1) = False
        done(2) = False
        done(3) = False
        ''MsgBox("item information count: " + tmpiteminfo2.Count.ToString)
        For f = 0 To tmpiteminfo2.Count - 1
            ''MsgBox(tmpiteminfo2.Item(f).evaluationSource)
            Select Case tmpiteminfo2.Item(f).evaluationSource
                Case Is = "Gamestop"
                    tmpevalinfo.valuationsourceid = 1
                Case Is = "Amazon"
                    tmpevalinfo.valuationsourceid = 2
                Case Is = "Ebay"
                    tmpevalinfo.valuationsourceid = 3
                    ''add more sources here later
            End Select
            Select Case tmpiteminfo2.Item(f).itemcondition
                Case Is = ItemCondition.Broken
                    ''If done(0) = False Then
                    mode = pricefunctions.Mode(broken.ToArray)
                    max = pricefunctions.MaxValue(broken.ToArray)
                    min = pricefunctions.MinValue(broken.ToArray)
                    avg = pricefunctions.AveragePrice(broken.ToArray)
                    standarddev = pricefunctions.standarddeviation(broken.ToArray)
                    done(0) = True
                   '' End If
                Case Is = ItemCondition.LooksLikeNew
                    ''If done(1) = False Then
                    mode = pricefunctions.Mode(Lookslikenew.ToArray)
                    max = pricefunctions.MaxValue(Lookslikenew.ToArray)
                    min = pricefunctions.MinValue(Lookslikenew.ToArray)
                    avg = pricefunctions.AveragePrice(Lookslikenew.ToArray)
                    standarddev = pricefunctions.standarddeviation(Lookslikenew.ToArray)
                    done(1) = True
                   '' End If
                Case Is = ItemCondition.SomeDamage
                    '' If done(2) = False Then
                    mode = pricefunctions.Mode(damaged.ToArray)
                    max = pricefunctions.MaxValue(damaged.ToArray)
                    min = pricefunctions.MinValue(damaged.ToArray)
                    avg = pricefunctions.AveragePrice(damaged.ToArray)
                    standarddev = pricefunctions.standarddeviation(damaged.ToArray)
                    done(2) = True
                   '' End If
                Case Is = ItemCondition.SomewhatUsed
                    ''If done(3) = False Then
                    mode = pricefunctions.Mode(somewhatused.ToArray)
                    max = pricefunctions.MaxValue(somewhatused.ToArray)
                    min = pricefunctions.MinValue(somewhatused.ToArray)
                    avg = pricefunctions.AveragePrice(somewhatused.ToArray)
                    standarddev = pricefunctions.standarddeviation(somewhatused.ToArray)
                    done(3) = True
                    '' End If

            End Select

            ''assign values to minimum price, maximum price, and the other prices. 
            If min > 0 Then
                tmpevalinfo.MinimumPrice = min
            End If
            If mode > 0 Then
                tmpevalinfo.ReoccuringPrice = mode
            End If
            If avg > 0 Then
                tmpevalinfo.avgprice = avg
            End If
            If max > 0 Then
                tmpevalinfo.MaximumPrice = max
            End If
            If standarddev > 0 Then  ''And standarddev < 1 Then
                tmpevalinfo.avgdeviation = standarddev
            End If
            min = 0
            max = 0
            mode = 0
            avg = 0
            tmpevalinfo.currentItem = tmpiteminfo2.Item(f).name
            tmpevalinfo.evaluationcondition = tmpiteminfo2.Item(f).itemcondition
            ''MsgBox(tmpiteminfo2.Item(f).itemcondition)
            tmpevalinfo.evaluated = True
            itemevalresultarr.Add(tmpevalinfo)

        Next f
        ''Dim iteminfoc As New ItemInformation
        ''For s = 0 To tmpiteminfo.Count - 1
        ''    iteminfoc.itemsevaluate.Add(tmpiteminfo.Item(s).name)
        ''    ''add other item information and change to iteminfo type once I get information to display correctly on findquote form
        ''Next s
        Dim itemval As New ItemValuation
        Dim tmpevalsource As New EvaluationSource
        Using uie As New DataAccess.SQLiteDb
            For h = 0 To tmpiteminfo.Count - 1
                tmpevalsource.EvaluationSourceName = tmpiteminfo.Item(h).evaluationSource
                tmpevalsource.EvaluationWebAddress = (From EvalWeb In uie.ValuationSources Where EvalWeb.ValuationSourceName = tmpevalsource.EvaluationSourceName Select EvalWeb).ToString
                Await itemval.archiveitem(tmpiteminfo.Item(h).name, tmpiteminfo.Item(h).name, tmpevalsource)
            Next
        End Using
        ''delete all the evaluated items from the database for next evaluation

        Await ClearEvalTable()
        ''return regular results
        Return itemevalresultarr
    Else
        ''return automated evaluation results
        ''results are archived as they are retrieved so delete data from the table below
        ''delete all the evaluated items from the database for next evaluation
        Return autoitem
    End If

End Function

Aquí está la firma de la función interna:

Private Async Function GrabFromOnlineSource(itemname As String, WebsiteSource As String, progress As IProgress(Of Integer)) As Task(Of List(Of EvaluationInfo))

Esto es lo que he intentado hasta ahora ( actualizado ):

primer intento:

  tmpevalitem = Await GrabFromOnlineSource(item.Item(i).name, item.Item(i).evaluationSource, New Progress(Of Integer)(Function(value) InlineAssignHelper(totalprogress, value))). ''replace totalprogress with the a integer I mentioned in the comments.
                  tmpevalitem.Wait()

segundo intento:

   tmpevalitem = GrabFromOnlineSource(item.Item(i).name, item.Item(i).evaluationSource, New Progress(Of IProgress(Of Integer))(Function(value) InlineAssignHelper(evalprogress, value)))
                        tmpevalitem.Wait()

El código anterior termina en un error sobre el progreso del tipo de datos que no es correcto. Realmente necesito pasar mi progreso de GrabFromOnlineSource a la variable evalprogress o de lo contrario tendré diferentes valores enviados al programa principal.

Nota: técnicamente podría tener GrabFromOnlineSource llamado para cada fuente de evaluación utilizada (4 totales posibles a partir de este momento). Además, cada fuente de evaluación enviada a GrabFromOnlineSource tiene su propio progreso informado que se cuenta para la fuente de evaluación actual (es decir, eBay tiene su propio progreso, Amazon es propio, etc.).

The EvaluationInfo y ItemInfo Structures:

     Public Structure EvaluationInfo
        Dim ReoccuringPrice As Double
        Dim MinimumPrice As Double
        Dim MaximumPrice As Double
        Dim avgprice As Double
        Dim avgdeviation As Double
        Dim currentItem As String
        Dim valuationsourceid As Integer
        Dim evaluationcondition As ItemCondition ''i.e. used,new,broken enum
        Dim evaluated As Boolean
    End Structure



 Public Structure ItemInfo
            Public Property name As String
            Public Property price As Double
            Public Property damaged As String
            Public Property aquisitiondate As Date
            Public Property evaluationSource As String
            Public Property itemcondition As ItemCondition
            Public Property itempicture As Byte()
            Public Property itemid As Integer

        End Structure

Más información:

Una cosa que olvidé mencionar es que el informe de progreso funciona con task.run desde la función evaluateitem pero prefiero modularizar mi código un poco para evitar que una acción ocupe demasiado espacio y es por eso que no he movido el código de GrabFromOnlineSource a evaluateitem.

Answer 1

intenté declarar una variable en la función GrabFromOnlineSource como byref y pasar a este método. después de la modalidad u en GrabFromOnlineSource, puede observar esta variable desde la función principal o cualquier otro lugar.

Perdón, debería verificar eso

Método nr.2

Entonces, ¿por qué no envuelves este proceso en clase, algo así si quieres progresar en 2 tareas, siempre puedes observar este objeto o agregar eventos para el seguimiento del progreso?

    Public Sub SomeMethod()
    Dim Wrap1 As New WrapConteiner
    Dim Wrap2 As New WrapConteiner
    Wrap2.Sleep = 200
    Dim Tasks(0 To 1) As Task
    Tasks(0) = New Task(AddressOf Wrap1.AwaitedProcessAsync)
    Tasks(1) = New Task(AddressOf Wrap2.AwaitedProcessAsync)
    Tasks(0).Start()
    Tasks(1).Start()
    Do While (Tasks(0).Status = TaskStatus.Running Or Tasks(1).Status = TaskStatus.Running Or Tasks(0).Status = TaskStatus.WaitingToRun Or Tasks(1).Status = TaskStatus.WaitingToRun)
        Task.WaitAll(Tasks, 10)
        Debug.Print("Wrap1: " & Wrap1.Progress)
        Debug.Print("Wrap2: " & Wrap2.Progress)
    Loop
    Debug.Print("B")
End Sub

Public Class WrapConteiner
    Property Progress As Integer
    Property Sleep As Integer = 100
    Public Sub AwaitedProcessAsync()
        Dim x As Integer
        For x = 1 To 100
            Me.Progress = x
            Threading.Thread.Sleep(Sleep)
        Next
    End Sub
End Class

Answer 2

Perdón por la demora en responder mi propia pregunta, pero aquí va (no soy perfecto para formatear el código, así que un editor o administrador puede arreglarlo):

Este es el código de prueba de clase que utilicé por separado de mis proyectos dll para probar que esto estaba funcionando (también creé un nuevo proyecto para probar mi teoría):

Imports Windows.ApplicationModel.Core
Imports Windows.UI.Core

Public Class Progresstestclass
    Private Shared Property totalprogress As Integer
    Public Shared Async Function MainFunction(progress As IProgress(Of Integer)) As Task(Of Boolean)

        totalprogress = 5
        progress.Report(totalprogress)
        Dim a As New String("")
        Do While totalprogress > 0 And totalprogress < 70 And a <> "Success"
            Await InnerFunction(New Progress(Of Integer)(Function(value) InlineAssignHelper(totalprogress, value)))
            progress.Report(totalprogress - 5)
            Await System.Threading.Tasks.Task.Delay(1000)
            progress.Report(totalprogress)

        Loop
        Return True
    End Function
    Private Shared Async Function InnerFunction(progress2 As IProgress(Of Integer)) As Task(Of String)
    progress2.report(30)
            Await System.Threading.Tasks.Task.Delay(1000)
            progress2.Report(40)
          Await System.Threading.Tasks.Task.Delay(1000) 

        Return "Success"
    End Function
    Public Shared Function InlineAssignHelper(Of T)(ByRef target As T, value As T) As T
        target = value
        Return value
    End Function

End Class

Otra cosa que cambió dentro de mi función principal fue mi ciclo de while estaba un poco mal. Necesitaba retrasos entre la aprobación de los informes de progreso o, de lo contrario, no se retractó o se mostró al 100% al final, haciendo inútil mi informe de progreso. Cualquiera puede comentar sobre cómo hacer esto mejor. ¡Es una locura que retrasos perdonados puedan estropear un programa!

Todo lo demás es bastante parecido. Excepto que puse retrasos como los de arriba para que deje de pasar el progreso el tiempo suficiente para que el ojo natural vea el progreso.