arrays

[shankar_it]

Dim a() As String

a.SetValue("a-a", 0)

a.SetValue("a-b", 1)

a.SetValue("c-a", 2)

a.SetValue("b-l", 3)

a.SetValue("b-k", 4)

a.SetValue("c-l", 5)

a.SetValue("c-v", 6)

a.SetValue("a-l", 7)

 

when i try to use this in the program it always gives error.If i declare

 

Dim a(500) As String

 

it works but when i use a.length command it gives 501 as the result instead of 8 which i expect to return.

 

Can any one help me in this?.

[techmanbd]

Are you trying to put strings into an array then find out how many items you assigned to the array?

 

I would use arraylist like so

 

   Dim a As ArrayList
    a.Add("a-a")
    a.add("b-b") ' and so on. 
    Dim i As Integer = a.Count

Edited August 30, 2005 by techmanbd

[shankar_it]

i tryed using the arraylist but in my program i am using

 

a(i).Split("-") to get the first half of the each and every array in it and the split function does not work when i declare it as arraylist.I just want to run the program to get just the first half of each and every array which is the reason i am trying to use "Dim a() As String".

[Mothra]

i tryed using the arraylist but in my program i am using

 

a(i).Split("-") to get the first half of the each and every array in it and the split function does not work when i declare it as arraylist.I just want to run the program to get just the first half of each and every array which is the reason i am trying to use "Dim a() As String".

 

Have you tried using ReDim Preserve instead of a.SetValue("...", 0), etc?

When you declare the array as Dim a(500) As String, you're going to always have an array with a length of that ammount. You could also try casting the item in the ArrayList as a string before you do the split:

CType(a(i), String).Split("-")

[Joe Mamma]

i tryed using the arraylist but in my program i am using

 

a(i).Split("-") to get the first half of the each and every array in it and the split function does not work when i declare it as arraylist.I just want to run the program to get just the first half of each and every array which is the reason i am trying to use "Dim a() As String".

a(i).ToString().Split("-")

[shankar_it]

I opened a form and just typed in the below code

 

 

Dim a As ArrayList

a.Add("a")

 

it compiles but it gives the below error during run time.

 

"An unhandled exception of type 'System.NullReferenceException' occurred in remove duplicates.exe

 

Additional information: Object reference not set to an instance of an object."

[techmanbd]

change

Dim a As ArrayList

 

to

Dim a As New ArrayList

 

need to put "New" in

[shankar_it]

thank you ppl