Help with arrays

[shea6892]

So I have an assignment dealing with arrays for school but first I will start it off with the simple question as to where I am stuck now. I was wondering what the simplest way is to declare all the numbers in an array without going down the list one by one ( ArrayA(1) = 1, ArrayA(2) = 3 and so on.) I was wondering if the simplest way to do this is just by putting:
ArrayA = ArrayA += 1 or what the simplest way to do this is. Thanks for any help guys I appreciate it.

[Jenner]

If the numbers follow a formula or pattern, you just use a loop. For--Next loops work best for these tasks since you know the starting and ending point of your loop, and the loop uses an indexing number. Example:

Dim myArray(99) As Integer
For i As Integer = 0 to 99
    myArray(i) = i + 1
Next

This fills a 100 element array (0 through 99) with the number 1 to 100 (i + 1). Each cycle of the loop, I is incremented one higher. You can use any formula in these examples... maybe you need powers of 2:

Dim myArray(19) As Integer
For i As Integer = 0 to 19
    myArray(i) = 2 ^ (i + 1)
Next

Now, you can also directly assign numbers to an array, as long as it's a dynamic array. You can do this:

Dim myArray() As Integer = {0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144}

[shea6892]

Ahhh thank you very much Jenner. The for loop is exactly what I was trying to clarify. This should work perfectly for what I need to do. I am sure I will end up posting again on this project but thanks again for the help.

[shea6892]

So I made ArrayA(10) and ArrayB(10) in the declarations before then I added the For Next Loop making the array go from 1 to 10 and am trying to view the output in a listbox but when I assign a button to

Listbox.Items.Add(ArrayA)

It gives me some wacked out answer: "int32[]" and that is all that displays in the listbox. Thanks to anyone who can help.

[.paul.]

add is for 1 string, + an array is a collection of strings (or other datatypes) + you use addrange to add a collection:

Listbox.Items.AddRange(ArrayA)

[dbasnett]

So I made ArrayA(10) and ArrayB(10) in the declarations before then I added the For Next Loop making the array go from 1 to 10 and am trying to view the output in a listbox but when I assign a button to

Listbox.Items.Add(ArrayA)

It gives me some wacked out answer: "int32[]" and that is all that displays in the listbox. Thanks to anyone who can help.

The first entry in an array is (0). So ArrayA(10) is 11 elements (0-10).

[shea6892]

I am having problems making sure that my arrays are containing the right information. I want to list them in a ListBox but List.Items.Add and List.Items.AddRange methods are both not working to display a value in the Listbox. I am just trying to check to make sure that the array values are correct and then be able to display the matrix in the listbox also. Thanks.
This is my code so far:

Public Class Form1

    Dim ArrayA(10), ArrayB(10), Matrix(10, 4) As Double

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        For x As Double = 1 To 20
            ArrayA(x) = x + 2
        Next

        For x As Double = 0 To 20
            ArrayB(x) = x + 2

        Next

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

    End Sub
End Class

Edit: I got it covered. Now I just need to format a string to create nice columns for the Matrix in my form.