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vb.net background worker stops processing code on large file copy

Posted on 2010-09-14
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Last Modified: 2012-05-10
Basically small files (under 500MB) all process perfectly, but large files such as 3-4GB movie files hang up the code so it never finishes...

basically it doesn't look like the BGW does anything after the bgw.reportprogress(0, filename) code. It should email and it should delete the original file, but it stops.

Does a BGW have a timeout or anything like that?

Can someone please take a look and tell me why it would only stop working on large files? It will mostly process one large file but stops directly after the bgw progress changed command.
Private Sub bgw_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles bgw.DoWork
        Dim FileName As String
        Dim HasMoreItems As Boolean
        Dim Mbpslower As String
        Mbpslower = "15Mbps"
        While True
            Files.MRE.Reset()
            HasMoreItems = False
            Do
                FileName = Nothing
                SyncLock Files.SharedObject
                    If Files.ToBeProcessed.Count > 0 Then
                        FileName = Files.ToBeProcessed.Peek
                    End If
                End SyncLock
                If Not IsNothing(FileName) Then
                    While IsFileInUse(FileName)
                        Debug.Print(DateTime.Now.ToString() & " : File in use!  Waiting 5 seconds...")
                        System.Threading.Thread.Sleep(5000) ' wait 5 seconds to try again
                    End While

                    Dim hiDef As String = "HD"
                    Dim FVOD1 As String = "FVOD"
                    Dim Fifteen As String = "15Mbps"

                    If FileName.ToLower.Contains(hiDef.ToLower) Or FileName.ToLower.Contains(FVOD1.ToLower) Or FileName.ToLower.Contains(Fifteen.ToLower) Or FileName.ToLower.Contains("ipvod".ToLower) Then

                        Good(FileName)

                    Else
                        Bad(FileName)

                    End If
                End If

                SyncLock Files.SharedObject
                    HasMoreItems = (Files.ToBeProcessed.Count > 0)
                End SyncLock
            Loop While HasMoreItems
            Files.MRE.WaitOne()
        End While
        'End If

    End Sub

    Private Sub Good(ByVal FileName As String)

        Dim Mbpslower As String
        Mbpslower = "15Mbps"

        Try

            If FileName.ToLower.Contains(Mbpslower.ToLower) Then
                bgw.ReportProgress(0, FileName)
                System.IO.File.Copy("C:\video\" & FileName, "X:\encoded2\mcvod\transcode_needed\" & FileName, True)

            Else

                System.IO.File.Copy("C:\video\" & FileName, "X:\CPS\" & FileName, True)

                System.IO.File.Copy("C:\video\" & FileName, "X:\Encoded2\" & FileName, True)

            End If

            SyncLock Files.SharedObject
                Files.ToBeProcessed.Dequeue()
            End SyncLock
            bgw.ReportProgress(0, FileName)

        Catch ex As Exception
            System.Threading.Thread.Sleep(5000) ' wait 5 seconds before trying again
        End Try

        If FileName.ToLower.Contains(Mbpslower.ToLower) Then
            GoTo finish
        Else
            GoTo email
        End If






email:
        'Email code removed, but this code works perfectly
        Dim objWriter As New System.IO.StreamWriter("C:\UploadLog.txt", True)
        objWriter.WriteLine(FileName)
        objWriter.Close()
        GoTo finish
finish:
        System.IO.File.Delete("C:\Video\" & FileName)
    End Sub

Open in new window

Private Sub bgw_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles bgw.DoWork

        Dim FileName As String

        Dim HasMoreItems As Boolean

        Dim Mbpslower As String

        Mbpslower = "15Mbps"

        While True

            Files.MRE.Reset()

            HasMoreItems = False

            Do

                FileName = Nothing

                SyncLock Files.SharedObject

                    If Files.ToBeProcessed.Count > 0 Then

                        FileName = Files.ToBeProcessed.Peek

                    End If

                End SyncLock

                If Not IsNothing(FileName) Then

                    While IsFileInUse(FileName)

                        Debug.Print(DateTime.Now.ToString() & " : File in use!  Waiting 5 seconds...")

                        System.Threading.Thread.Sleep(5000) ' wait 5 seconds to try again

                    End While



                    Dim hiDef As String = "HD"

                    Dim FVOD1 As String = "FVOD"

                    Dim Fifteen As String = "15Mbps"



                    If FileName.ToLower.Contains(hiDef.ToLower) Or FileName.ToLower.Contains(FVOD1.ToLower) Or FileName.ToLower.Contains(Fifteen.ToLower) Or FileName.ToLower.Contains("ipvod".ToLower) Then



                        Good(FileName)



                    Else

                        Bad(FileName)



                    End If

                End If



                SyncLock Files.SharedObject

                    HasMoreItems = (Files.ToBeProcessed.Count > 0)

                End SyncLock

            Loop While HasMoreItems

            Files.MRE.WaitOne()

        End While

        'End If



    End Sub



    Private Sub Good(ByVal FileName As String)



        Dim Mbpslower As String

        Mbpslower = "15Mbps"



        Try



            If FileName.ToLower.Contains(Mbpslower.ToLower) Then

                bgw.ReportProgress(0, FileName)

                System.IO.File.Copy("C:\video\" & FileName, "X:\encoded2\mcvod\transcode_needed\" & FileName, True)



            Else



                System.IO.File.Copy("C:\video\" & FileName, "X:\CPS\" & FileName, True)



                System.IO.File.Copy("C:\video\" & FileName, "X:\Encoded2\" & FileName, True)



            End If



            SyncLock Files.SharedObject

                Files.ToBeProcessed.Dequeue()

            End SyncLock

            bgw.ReportProgress(0, FileName)



        Catch ex As Exception

            System.Threading.Thread.Sleep(5000) ' wait 5 seconds before trying again

        End Try



        If FileName.ToLower.Contains(Mbpslower.ToLower) Then

            GoTo finish

        Else

            GoTo email

        End If













email:

        'Email code removed, but this code works perfectly

        Dim objWriter As New System.IO.StreamWriter("C:\UploadLog.txt", True)

        objWriter.WriteLine(FileName)

        objWriter.Close()

        GoTo finish

finish:

        System.IO.File.Delete("C:\Video\" & FileName)

    End Sub

Open in new window

0
Comment
Question by:MaxDes101
2 Comments
 
LVL 29

Accepted Solution

by:
nffvrxqgrcfqvvc earned 500 total points
ID: 33676035
lines 16 to 20.. Do you keep running this loop if a file is in use? What if the file doesn't release then it just sits there?
0
 

Author Closing Comment

by:MaxDes101
ID: 33676675
file wasn't being release. You are right. thanks
0

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