[RESOLVED] [2005] Removing filename from path string

[sdk1985]

I am creating an application that downloads a file, copies the old file to c:/sdk/backup (after check if this folder exists) then it moves the downloaded file to the location of the original file.

The location of the original file is variable, the user has 2 options: leave the default path in a textbox or choose openfiledialog to put a new path in the same box.

Before moving the downloaded file to the original location I would like to check if indeed this path exists. If I now change the default location to Z:/blablabla then the program crashes with an I/O exeption.

I now use this:

Dim bestandsnaam = TextBoxLocatie.Text.Substring(TextBoxLocatie.Text.LastIndexOf("\") + 1)

(dutch for filename)

Now I would like to do something like this:

Dim ftdlocatiedir As String = TextBoxLocatie.Text.Substring(TextBoxLocatie.Text - bestandsnaam)

Unfortunately such coding does not exist. Can anyone help me with this?

the goal is to make this work (now I do not have a valid string for the ftdlocatiedir).

If Not IO.Directory.Exists(ftdlocatiedir.Text) Then
                MessageBox.Show("Not a valid directory to download to, please pick a valid directory", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
                Return
            Else
                File.Copy(downloadlocatie, ftdlocatie)
                LabelFinish.Visible = True
                LabelFinish.Text = "Nieuwe post bestand geplaatst, Start FTD!"
            End If

Thanks in advance (!).

[stanav]

Use the IO.Path class

Dim filePathOnly As String = IO.Path.GetDirectoryName("C:\somefolder\subfolder\test\test.txt")
        MsgBox(filePathOnly)

[sdk1985]

Use the IO.Path class

Dim filePathOnly As String = IO.Path.GetDirectoryName("C:\somefolder\subfolder\test\test.txt")
        MsgBox(filePathOnly)

Ok thanks it works.

I am noticing some strange behavior though with the download script. I replaced the default download script I used with one of this forum that included a progress bar

http://www.vbforums.com/showthread.php?t=396260

Original code I used before:

  Protected Sub DownloadWebFile(ByVal remoteFile As String, ByVal localFile As String)
        LabelDownload.Text = "Download gestart"
        Dim localFileStream As New FileStream(localFile, FileMode.OpenOrCreate)
        Dim myRequest As WebRequest = WebRequest.Create(remoteFile)
        myRequest.Method = WebRequestMethods.Http.Get
        Dim myResponse As WebResponse = myRequest.GetResponse
        Dim myResponseStream As Stream = myResponse.GetResponseStream
        Dim buffer(1024) As Byte
        Dim bytesRead As Integer = myResponseStream.Read(buffer, 0, 1024)
        While bytesRead > 0
            localFileStream.Write(buffer, 0, bytesRead)
            bytesRead = myResponseStream.Read(buffer, 0, 1024)
        End While
        LabelDownload.Text = "Download gelukt"
        localFileStream.Close()
        myResponseStream.Close()
    End Sub

With the code from the forum the file downloads really slow in the beginning (untill 50%) after this it goes from 60-100 kbps to 700 kbps. 800 should be no problem...