Visual Basic I/O pointer question

[DTV_Janus]

Using Visual Basic 6.0

I have set up a connection to a file like so

  Quote

Dim fso As New FileSystemObject, mFile As File

Set mFile = fso.GetFile("C:\cushion_size.txt")

Set mTxtStream = mFile.OpenAsTextStream(ForWriting)

For i = 1 To 50

      ' Get a random value between 0 and 1.

      aValue = Rand(0, 3)

      ' Add the value to the chart

      mTxtStream.Write (aValue & "-")

Next i

mTxtStream.Write ("EOF")

Call mTxtStream.Close

How do i set the pointer for the position of where i want to read in a file? For example, i have a file that looks like this:

2-3-1-4-2-3-1-2-0-2-4-2-1-3-0-1-1-2-EOF

I want to read the first number (2, position 1 in the file), note where the next - is (position 2), read the next number (3, 3rd position), note the next -....

and so on.

[Andareed]

Most likely Seek.

[DTV_Janus]

Is that a VB function? I only find references to C on the MSDN site for that.

[azcodemonkey]

Sorry.... that was for .NET.

Using the FSO, you can only read sequentially.

You would need to use the Open statement to open the file for Random access. Then you can use Seek.

Open

http://msdn.microsoft.com/library/default....l/vastmOpen.asp

Seek

http://msdn.microsoft.com/library/default....l/vastmseek.asp

Edited December 28, 2004 by weenur

[DTV_Janus]

Weenur, again you come through in a jam. My hat is off to you! :fun:

Steve