Need to display sum/average of rows and columns of global integer array

[Lan Solo]

Ok, my verbiage might not be right on the money (cuz I'm a Newbie) but let me try to explain.

 

My school project requires that we declare a data table as a Global Integer Array. The form menu gives the user options to either sum or average the rows and columns and then display the results in a message box.

 

I am having trouble determining the subs or variables that will be used when the click event occurs. Here is some code from the project. If anyone has any suggestions or can see where I am messing up, that would be great. I can't seem to get the desired results to display.

 

Dim gintTable(,) = {{5, 7, 3, 9, 12}, {4, 8, 9, 13, 4}, {0, -1, -7, 13, 8}, {4, 4, 4, 4, 0}} 

   Dim intRowSum As Integer 

   Dim C As Integer 

   Dim R As Integer 

   Dim X As Integer 

   Dim IntSum 

   Dim strX As String 

   Dim ControlChar 

 

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

 

   End Sub 

 

   Private Sub btnRowSum_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRowSum.Click 

       For R = 0 To 3 

           For X = 1 To 4 

               For C = 0 To 4 

                   IntSum += gintTable(R, C) 

               Next C 

               strX = IntSum 

           Next X 

       Next R 

   End Sub 

 

R is for Row, C is for Column, X is the incremental variable I want to 'attach' to str, so each loop will generate a new total.

 

So - One thing I cannot get it to do, my 'strX' is the 'Result' and the logic is failing.

 

How do I get �strX� to 'hold' it's value each loop, and display in the MsgBox, noncumulative?

 

(I wanted X to increase by 1 each loop and end up with 'str1, str2... or strX1, strX2...)

 

Thanks in advance.

[aewarnick]

In C# you would use:

strX += IntSum

[PlausiblyDamp]

in vb you would use

strX += IntSum

 

;)

 

sorry couldn't resist

[aewarnick]

I thought it was the same but I wanted to make sure. Now I know. Thank you.

[PlausiblyDamp]

VB doesn't get the ++ or -- operators though, and I do miss them.

[aewarnick]

It does use += to append to a string doesn't it?

[Lan Solo]

Thanks guys..got it working

[Volte]

It does use += to append to a string doesn't it?

& and &= are the string appending operators.

[wyrd]

& and &= are the string appending operators.

 

Maybe for VB, but for C# you use + for string concatenation. Maybe you can use both & and + in C#, but I know for a fact you can use +=.

[Volte]

Oh, heh, yeah. I thought you meant VB in comparison to C#, not

other way around.

 

If you're going to be doing any significant amount of string building,

you should use the StringBuilder class (with it's .Append method)

anyway. :p

[aewarnick]

I didn't know that VB did not use += for string concentation. Thanks.