AdvancedHMI Software

General Category => Support Questions => Topic started by: ddddd13 on June 12, 2019, 03:51:56 PM

Title: Reading Network Drive
Post by: ddddd13 on June 12, 2019, 03:51:56 PM

I am trying to read a file from a network drive I have setup on another computer. I have the following code on a button.

   Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Using sr As New System.IO.StreamReader("Z:\Files\MachUpdate.txt")
            While Not sr.EndOfStream
                MachUpdate.Add(sr.ReadLine())
            End While
        End Using
        RichTextBox2.Text = MachUpdate(1)

I am quite certain something is wrong with the path Z:\Files\MachUpdate.txt because I have the same file on the computer running advanced HMI c:\Files\MachUpdate.txt and it too bombs out with system I/O file not found. Any idea what my path should be?

Thanks,
Dave

Title: Re: Reading Network Drive
Post by: Archie on June 12, 2019, 05:40:31 PM

I never trust a mapped drive because they tend to lose connection and not reconnect. I always use the full UNC path such as:

\\servername\path\filename

Title: Re: Reading Network Drive
Post by: ddddd13 on June 12, 2019, 07:59:34 PM

So, I have changed the path to
  Using sr As New System.IO.StreamReader("\\DAVE-PC\Z:\Files\MachUpdate.txt")
or
 Using sr As New System.IO.StreamReader("\\(DAVE-PC)\Z:\Files\MachUpdate.txt")
I still get an alarm.
or
Using sr As New System.IO.StreamReader("(\\(DAVE-PC)\Z:\Files\MachUpdate.txt")

System not supported exception: The given path's format is not supported

Title: Re: Reading Network Drive
Post by: Archie on June 12, 2019, 08:14:34 PM

The Z: would no longer be used unless it is a directory.

If you put the path in Windows Explorer, does it show anything?

Is your remote PC setup as a shared directory? Is the firewall turned off?

Title: Re: Reading Network Drive
Post by: ddddd13 on June 12, 2019, 09:10:55 PM

Archie;

This is weird as shit.

This is the way it has to be entered.

 Using sr As New System.IO.StreamReader("\\DAVE-PC\Network folder\Files\MachUpdate.txt.txt"

Without the double txt.txt it will not work

Does that make sense to you?
Dave

Title: Re: Reading Network Drive
Post by: Noe on June 13, 2019, 09:31:00 AM

You have your file explorer set to hide extensions, and your file name is "MachUpdate.txt", with the extension txt. At least this is what I experienced before with similar cases.