reading and writing to a txt file

[bjwade62]

I have an existing txt file that I want to open, get the text (which is a number), add 1 to the number and save/close the txt file.

Sound like filestream but Im not sure how to use it. Ive founds peices of information but nothing I can use together.

Any help out there?

Thanks,

 

[snarfblam]

Assuming that you are using DotNet 2.0 or later, and the number is the only contents of the text file, you could do something along the lines of the following:
[Vb]

Dim FileName As String
Dim Lines() As String Contents of the files will be stored here

Lines = System.IO.File.ReadAllLines(FileName)
This assumes that the first line of the file contains a properly formatted number
Dim Value As Double = Double.Parse(Lines(0))
Increment the number
Value += 1
Store it back in the document
Lines(0) = Value.ToString()
Write the document back to the disk
System.IO.File.WriteAllLines(FileName, Lines)
[/VB]
I havent tested it and some exception handling would be a very good idea, but thats the jist of it.

 

[bjwade62]

That worked. Thanks