13 replies to this topic

[deloreandude]

Hi everyone

Im trying to do something in VB.net and failing.

I want to read integers as they are below from a file and put them into an array of integer.

2,4,3,1,2,4,5,6,4,3,2,4,2
2,4,7,5,3,8,2,4,3,2,4,2,0

Each line has the same number of numbers. and each line will go to a seperate array

How can i read this data and place it into an array of type integer.
The usuall way using streamreader gets me data type missmatch errors.

Thanks in advance

[dargueta]

That's because of the commas. You're better off replacing the commas with spaces; try that first, and if it doesn't work, let us know.

[Xav]

You shouldn't need that. Just read each line, and use the Split(",") string function to split it automatically into an array!

[deloreandude]

Ok im still having problems with this..

the file needs to contain integers but the format can be changed
such as 1,2,3,1,5,2,4 or with spaces instead...

i need to ultimately get these bumbers into a 2D array... however for now into a 1D as integers would be fine.

they must be as integers,

any help would be appreciated.. thanks

[Xav]

Dim data As String =  System.IO.File.ReadAllText("C:\thefile.txt")
Dim thearray(data.Split(",").Length) As Integer = data.Split(",")

Untested, but does it work?

[deloreandude]

Dim data As String = System.IO.File.ReadAllText("C:\thefile.txt")
Dim thearray(10) As Integer
thearray = data.Split(",")

had to change the code because of array initialize error.. and now it says

value 1 dimentional array ... cannot be convert..because string is not derived from integer

[Xav]

Aha! Replace the last line with:

thearray = CInt(data.Split(","))

[deloreandude]

just an error saying

value of type 1 d array of string cannot be converted to an integer

[Xav]

OK then.

Dim data As String = System.IO.File.ReadAllText("C:\thefile.txt")
Dim thearray(10) As String
thearray = data.Split(",")

You have an array of string values.

[deloreandude]

ok so how do i change that to an array of integer values?

[dargueta]

Just go through each item and use CInt() on it, and store it in a second integer array.

[Xav]

Yep. Use a for loop or a foreach loop.

Dim data As String = System.IO.File.ReadAllText("C:\thefile.txt")
Dim thearray(10) As String
thearray = data.Split(",")

Dim intarray(thearray.Length) As Integer

For (index As Integer) = 0 To thearray.Length - 1
 intarray(index) = CInt(thearray(index))
Next index

Untested, but does it work?

Edited by Xav, 27 July 2008 - 05:17 AM.