主题：ftp 文件 另存 打开 报错.

    Dim ftp As New FTPClient
    ftp.host=vars("FTP_ip地址")
    ftp.Account =vars("FTP_账号")
    ftp.password =vars("FTP_密码")
    ftp.Port= vars("FTP_端口")
  '  ftp.RootDir = "\图片文件\" & n '设置根目录
    If ftp.Download(e.FileName,"e:\downpdf.pdf") = True Then
        Dim fn As String = "e:\downpdf1.pdf"
        e.FileName = fn
    End If

If e.filename.Contains(".pdf") Then
    Dim ftp As New FTPClient
    ftp.host=vars("FTP_ip地址")
    ftp.Account =vars("FTP_账号")
    ftp.password =vars("FTP_密码")
    ftp.Port= vars("FTP_端口")
  '  ftp.RootDir = "\图片文件\" & n '设置根目录
    If ftp.Download(e.FileName,"e:\downpdf.pdf") = True Then
        Dim fn As String = "e:\downpdf1.pdf"
        
        Dim waterMarkName As String = "TBFC  "  & User_ReName  & " " & Date.now
        Dim reader As New iTextSharp.text.pdf.PdfReader("e:\downpdf.pdf")
        
        Dim msWater As new io.FileStream(fn, io.FileMode.Create)
        
        Dim total  As Integer = reader.NumberOfPages
        Dim pdfStamper As new iTextSharp.text.pdf.PdfStamper(Reader, msWater)
        
        Dim psize = Reader.GetPageSize(1)
        Dim width = psize.Width
        Dim height = psize.Height
        Dim gs As new iTextSharp.text.pdf.PdfGState
        Dim basefont  As iTextSharp.text.pdf.BaseFont = iTextSharp.text.pdf.BaseFont.CreateFont("C:\WINDOWS\Fonts\SIMYOU.TTF", iTextSharp.text.pdf.BaseFont.IDENTITY_H, iTextSharp.text.pdf.BaseFont.NOT_EMBEDDED)
        For i As Integer = 1 To total
            
            Dim waterContent = pdfStamper.GetOverContent(i)
            waterContent.SetGState(gs)
            waterContent.BeginText()
            waterContent.SetColorFill( iTextSharp.text.BaseColor.RED)
            waterContent.SetFontAndSize(basefont, 28)
            waterContent.SetTextMatrix(0, 0)
            waterContent.ShowTextAligned(iTextSharp.text.Element.ALIGN_CENTER, waterMarkName, width / 2, height / 2, 55)
            waterContent.EndText()
        Next
        
        pdfStamper.close
        reader.Close()    '这里 加了水印 再另存的'
        e.FileName = fn    '但是来到这里  就报错了  ,说 路径 有问题
    End If