[RESOLVED] Data to an array from TXT file

Hi folks. I am trying to sort a list of phone directories stored in a TXT via a bubblesort using a tempArray. The problem I have that the code breaks on the line that supposed to store the data in the array. This part of a bigger exercise but I need to list data alpha/numeric ascending.

VB Code:

Dim sr As StreamReader
    Dim sw As StreamWriter
    Dim temp() As String
    Dim prompt As String
    Dim counter, i, j As Integer
    fn = "PHONELISTS.TXT" 'File with phone directories
    sr = File.OpenText(f & fn)
    counter = 0
    Do While (sr.Peek <> -1)
      counter += 1
     :confused: [COLOR=Blue][B]temp(i) = sr.ReadLine [/B] [/COLOR] 
    Loop
    sr.Close()
    OpenDir(fn, counter)
  End Sub

You haven't created an array object. This line:

VB Code:

Dim temp() As String

declares an array variable. You cannot create an array object without specifying how many elements it will contain because arrays are fixed-size. Even if you had created an array object you couldn't simply keep adding elements to it beyond its length. I suggest that you follow the Start VB.NET link in my signature and read the section on arrays. You should find that it enlightens you considerably regarding arrays in .NET.

You can always resize with something like this:

VB Code:

dim sz as integer
dim arr() as string
 
sz+=1
redim preserve arr(sz)
arr(sz)="Whatever"

There are other ways, and there may well be simpler ways, but not using a straight array (at least not one that I know of).

So, why bubble sort? With all the options out there, why choose the slowest one?

Quote:

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Originally Posted by Shaggy Hiker

So, why bubble sort? With all the options out there, why choose the slowest one?

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Cheers I do have to do a bubblesort & this is part of a bigger project.

I have to search for & create phone directories(PD) and the phone directories are in a sequential TXT file. If PD not exist then create it then I have to add & delete names to the various directories. All data have to be in ascending alpha order as well.

This is killing me as I think I have system problems, I have trouble getting on the net, I am doing home study & of course the text has minor glitches so I need al the help I can get!!! :eek: