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close pdf in webbrowser control

Posted on 2008-10-03
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Last Modified: 2013-12-26
I have a windows form application that I use to scan pdf and jpg documents. In the form I placed a webbrowser control to preview the scanned files.
All the file paths are displayed in a listbox and when the listindex change the webbrowser navigate to the file showing it.
Sometimes may happen that the scan isn't good or something like that so I need to delete the file, but when I select the file to delete it's opened in the webbrowser. I have no problem with jpeg, but with pdf it throws an exception telling that is impossible to delete the file because it's opened in another application.
I could kill the acrobat process but it's not the solution I want.
I tried to make the webbrowser navigate to about:blank and to dispose the webbrowser but with no luck.
Plus when I shut down the computer it always tells me that there is a document opened in acrobat and ask me if I want to close it. I think is related to my application.
Any help is appreciated
Private Sub cmsScanDeleteFile_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmsScanDeleteFile.Click

        Dim text As String = ""

        Select Case lstScan.SelectedItems.Count

            Case 1

                testo = "Are you sure you want to delete the selected file?"

            Case Is > 1

                testo = "Are you sure you want to delete " & lstScansioni.SelectedItems.Count & " selected files?"

        End Select

        Dim risp As String = MsgBox(text, MsgBoxStyle.YesNo)

        If risp = vbYes Then
 

            Dim cont As Integer = lstScan.SelectedItems.Count - 1

            Dim drows(cont) As DataRowView

            Dim x As Integer = 0

            For Each dr As DataRowView In lstScan.SelectedItems

                drows(x) = dr

                x = x + 1

            Next

            WebBrowser1.Stop()

            WebBrowser1.Url() = New Uri("about:blank")

            WebBrowser1.Dispose()

            For x = 0 To cont

                Call DeleteFile(drows(x).Item("id"))

            Next

            Call Save()

        End If

    End Sub
 

    Private Sub EliminaFile(ByVal id As Integer)

        Dim rf As dsat.AttivazioniScansioniRow = Me.Dsat.AttivazioniScansioni.FindByid(id)

        Dim file As String = ""

        If rf.Locale = True Then

            file = My.Settings.PercorsoLocaleAttivazioniWind & "\" & rf.NomeFile & rf.Estensione

        Else

            file = My.Settings.PercorsoAttivazioni & "\" & rf.PercorsoRelativo & "\" & rf.NomeFile & rf.Estensione

        End If

        Dim psi As New System.Diagnostics.ProcessStartInfo()

        psi.UseShellExecute = True

        psi.FileName = file

        If System.IO.File.Exists(psi.FileName) = True Then

            System.IO.File.Delete(file)

            rf.Delete()

            Me.AttivazioniScansioniTA.Update(Dsat.AttivazioniScansioni)

        Else

            Dim risp As String = MsgBox("Il file non è stato trovato nel percorso corretto, vuoi eliminarlo anche dal programma?", MsgBoxStyle.YesNo)

            If risp = vbYes Then

                rf.Delete()

                Me.AttivazioniScansioniTA.Update(Dsat.AttivazioniScansioni)

            End If

        End If

    End Sub

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Question by:marcocatelli
3 Comments
 
LVL 18

Accepted Solution

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vbturbo earned 500 total points
ID: 22660131
Hi

i dont if this also works for webbrowser but its worth checking out


http://69.10.233.10/KB/cpp/ReaderWrapper.aspx

vbturbo
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