无法删除文件，因为我的程序仍然打开

Question

我有一个程序可以抓取 PDF 文件并合并它们，然后将原始未合并的文件删除到回收站。

我一直在重新设计程序以利用 Syncfusion PDF 工具，并且大部分时间都很顺利，直到我尝试删除文件。

警告弹出窗口告诉我是我的程序打开了文件，但我不确定它仍然在程序中的哪个位置打开或如何找到。

函数如下：

Function MergePDFSync(ByVal Path As String, ByVal SavePath As String, ByVal outFileName As String, ByVal DeleteOriginal As Boolean) As String
    On Error GoTo sError

    Dim CreateDate As Date = Now
    Dim finalFileName As String = ""
    Dim dInfo As New DirectoryInfo(Path)

    If dInfo.GetFiles("*.pdf").Length > 0 Then
        Dim doc As New Syncfusion.Pdf.PdfDocument
        Dim ldoc As Syncfusion.Pdf.Parsing.PdfLoadedDocument
        Dim file As String

        For Each f As FileInfo In dInfo.GetFiles("*.pdf")
            ldoc = New Syncfusion.Pdf.Parsing.PdfLoadedDocument(f.OpenRead)
            Syncfusion.Pdf.PdfDocument.Merge(doc, ldoc)
            ldoc.Close()
            doc.DisposeOnClose(ldoc)
        Next
        ldoc = Nothing

        finalFileName = Format(CreateDate, "M-d-yy-HHmmss-") & outFileName

        doc.Save(Path & "\" & finalFileName)
        doc.Close()
        doc = Nothing

        dInfo = Nothing

        If DeleteOriginal Then ' delete origional files
            dInfo = New DirectoryInfo(Path)
            For Each f As FileInfo In dInfo.GetFiles("*.pdf") 'For i As Integer = 0 To strFiles.Length - 1 ' run through all the files in the directory
                Console.WriteLine("MergePDF2 10.1 : " & f.Name & " = " & finalFileName)
                If Not f.Name = finalFileName Then
                    Console.WriteLine("MergePDF2 10.2 : Delete " & f.FullName)
                    My.Computer.FileSystem.DeleteFile(f.FullName, FileIO.UIOption.OnlyErrorDialogs, FileIO.RecycleOption.SendToRecycleBin)
                End If
            Next
        End If
    End If

    Return finalFileName
    Exit Function
sError:
    ReportError("MergePDF2 " & Path & " " & Err.Description)
    Console.WriteLine("MergePDF2 " & Path & " " & ErrorToString())
End Function

Answer 1

我知道他们的合并功能有问题，我不确定它是否已修复或您使用的是哪个版本。您可能想尝试合并的替代方法。

Dim docTarget As PdfLoadedDocument = New PdfLoadedDocument(targetFile)
Dim docAppend As PdfLoadedDocument = New PdfLoadedDocument(appendFile)

docTarget.Append(docAppend)
docTarget.Save()
docTarget.Close(True)
docAppend.Close(True)

http://www.syncfusion.com/support/forums/pdf-windows/79124

或一页一页地添加

doc.Pages.Add(ldoc.Pages[i]);

http://www.syncfusion.com/support/kb/876/How%20to%20merge%20two%20PDF%20documents