[RESOLVED] [2008] Adding elements in array

[sparker]

Hi,
I am just starting VB at 60 years old and with no programming experience and nobody to ask for help...except here, of course. So needless to say I am hitting brickwalls. I am using "Murach's Visual Basic 2008" and it seems to be a good book. This is what I am up to -

I have to declare an array with 5 elements with an index. I think that part is OK. Then add code that adds each element to the next one every time a user clicks a button. I have had many tries but the best I can get is just the grand total of the elements. Here is the code I came up with:-

Private Sub btnCalculate_Click(ByVal sender As System.Object, _
            ByVal e As System.EventArgs) Handles btnCalculate.Click
        Dim elements As Decimal
        Dim sum As Decimal
        Dim numbers() As Decimal = {350.49D, 546.73D, 123.45D, 56.85D, 752.69D}
        For Each elements In numbers
            sum += elements
            elements = 0
        Next
        txtTotal.Text = FormatCurrency(sum)

Is anyone able to show me how the button click would reveal a progressive total of the elements each time a user clicked on it? It would be good if the book came with answers or had a forum for their readers. Grateful for any help but be gentle.

[Vectris]

What do you mean by a "progressive" total? Otherwise your code looks fine as it should give you a total of all the elements in the array. What is the "progressive" that your looking for?

Perhaps an example of what you are trying to do?

[Bulldog]

This code starts with a CurrentIndex of 0, so the first time the button is clicked, it adds number(0) to the CurrentTotal, then next time it adds number(1) etc. until the CurrentIndex is greater than the numbers.Length-1. Arrays are zero based, so you have to remember to subtract 1, so numbers has 5 elements, the last is numbers(4).

    Dim numbers() As Decimal = {350.49D, 546.73D, 123.45D, 56.85D, 752.69D}

    Dim CurrentIndex As Integer = 0
    Dim CurrentTotal As Decimal = 0

    Private Sub btnCalculate_Click(ByVal sender As System.Object, _
            ByVal e As System.EventArgs) Handles btnCalculate.Click

        If CurrentIndex < numbers.Length Then
            CurrentTotal += numbers(CurrentIndex )
            txtTotal.Text = FormatCurrency(CurrentTotal).ToString
            CurrentIndex += 1
        End If

    End Sub

[sparker]

Bulldog has nailed it for me. Thanks to Vectris and Bulldog for their time.

[turtlet]

Sparker

I have started Murach's VB 2008 too! is this the example in chapter 8 exercise? i got stuc there too and started googling all over the place and finally cam here. This looks like a gr8 place. Looks like ur way ahead on ur vb course. cani buzz u if im stuck anywhere else.

[sparker]

Sparker

I have started Murach's VB 2008 too! is this the example in chapter 8 exercise? i got stuc there too and started googling all over the place and finally cam here. This looks like a gr8 place. Looks like ur way ahead on ur vb course. cani buzz u if im stuck anywhere else.

Sorry Turtlet but I have given up (again) for now. My problem is that I need to have a reason to persevere and I was just doing it for a hobby. There are lots of others here that are very helpful and more knowledgeable. Stick with it and best of luck with your VB. I'll have another go later on....probably call on you for help!