Visual basic help

override367

I've only used VB a few times before and am totally in the dark as how to do what I'm being asked to do for this part of the assignment

Much googling hasn't helped

I have a text file with a series of numbers, each series seperated by zeros


eg:

1
2
3
0
1
2
3

I need my application to read the text file and store each number in an array. There's a bunch of other stuff too, but I got how to do all of that, I don't know how to get it to look in a file and pull numbers out, or put them in arrays, or to differentiate between series

Really wish I hadn't sold my textbooks but, the book store only needed 2 more and offered a good price

foggrat

Well, to start with, you'll want to use the FileSystem Object to read each line. Here's a link that talks about that:

http://support.microsoft.com/kb/186118

To stuff things in arrays, here's a link:

http://patorjk.com/programming/tutorials/vbarrays.htm

Since you don't know how large the array will be until you stuff it, I think "Dynamic Arrays" may be particularly useful.

Hope these resources help!

bowen

Are you having trouble with the code, or the logic?

Also, VB6 or VB.NET?

override367

foggrat wrote: »

Well, to start with, you'll want to use the FileSystem Object to read each line. Here's a link that talks about that:

http://support.microsoft.com/kb/186118

To stuff things in arrays, here's a link:

http://patorjk.com/programming/tutorials/vbarrays.htm

Since you don't know how large the array will be until you stuff it, I think "Dynamic Arrays" may be particularly useful.

Hope these resources help!

Thanks I'm gonna read these over

I mean it seems like it's way too complicated and I'm over thinking it, given that the next hardest assignment I've done consists entirely of this

Private Sub Calculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnCalculate.Click
' First it sets the variable we're going to use, then clears the listbox from previous usage
A = Val(TxtInputbox.Text)
LstListbox.Items.Clear()
' Checks if the value of the textbox is less than 100 before doing anything, if it is then we display
' an error message
If Val(TxtInputbox.Text) < 100 Then
LblWarningLabel.Show()
LstListbox.Items.Add(B)
' Checks if the value is over or equal to 100 and if it is hide previous warnings...
ElseIf Val(TxtInputbox.Text) >= 100 Then
LblWarningLabel.Hide()
' ... and start the loop, adding items to the listbox until the variable is ten less than the textbox
Do
LstListbox.Items.Add(A - 1)
A = A - 1
Loop Until (A = Val(TxtInputbox.Text) - 10)
End If

End Sub

And took like, 15 minutes

It's VB.net btw

Edit: i think that first link is only applicable for vb6

bowen

StreamReader is what you're looking for in .NET.

http://msdn.microsoft.com/en-us/library/system.io.streamreader.aspx

Imports System
Imports System.IO

Class Test
    Public Shared Sub Main()
        Try
            ' Create an instance of StreamReader to read from a file.
            Dim sr As StreamReader = New StreamReader("TestFile.txt")
            Dim line As String
            ' Read and display the lines from the file until the end 
            ' of the file is reached.
            Do
                line = sr.ReadLine()
                Console.WriteLine(Line)
            Loop Until line Is Nothing
            sr.Close()
        Catch E As Exception
            ' Let the user know what went wrong.
            Console.WriteLine("The file could not be read:")
            Console.WriteLine(E.Message)
        End Try
    End Sub
End Class

override367

Oh god he's got an example VB project on blackboard hidden away, my friend just e-mailed me lol

we've only been on VB for 2 weeks and I have zero prior experience

yea streamreader is what hes doing, should be able to get it between the example and your link bowen thanks

Chickeen

Dim asdf() As String = System.IO.File.ReadAllLines("c:\temp\test.txt")