Array Work in grades project

I am trying to make a program to calculate my grades in my classes this term. but I don't quite know how to use arrays yet (* i just started learning VB.net and its my first language) I just finished designing the user interface... (*see attachment)

Any help to get this started would be great...


Honestly, its just getting started. I have a book called... The Visual Basic.net Coach.... and i'm reading about arrays but i'm still stuck on even how to go about starting this project.... here... I start out i have to define variables... for example



VB:
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Dim HomeworkAverage As Single
Dim QuizAverage As Single
Dim TestAverage As Single

For Each Grade As Single In Homeworks
HomeworkAverage += Grade
Next

HomeworkAverage /= Homeworks.Length

For Each Grade As Single In Quizs
QuizAverage += Grade
Next

QuizAverage /= Quizs.Length

For Each Grade As Single In Tests
TestAverage += Grade
Next

TestAverage /= Tests.Length

Dim OverallAverage As Single = (5 * TestAverage + 3 * HomeworkAverage + 2 * QuizAverage) / 10
--------------------------------------------------------------------------------



I know its something like this, but i'm not really sure where i'm going wrong, or where to go from here.

Another thing. If you look at the user interface, what am i suppose to do with the "add score" button... add to what? how?

Hi,

I'm afraid your attachment was virtually unreadable. I don't know if others have had the same result. Your main form flashes up momentarily and then disintegrates.

I could briefly see some radio buttons and assume you use them to enter the results under each heading;

Homework
Quiz
Tests.

Because you do not necessarily know the number of results you will have to enter (assuming you intend to use the program several times during the college year) you will find it easier to use an arrayList rather than an array. Look up ArrayLists in MSDN Help.

So delcare with formwide scope:

VB Code:

Dim arrLHomework As New ArrayList
Dim arrLQuiz As New ArrayList
Dim arrLTests As New ArrayList

Add to the form

A TextBox named txtEnterScore
3 Labels named lblHomework; lblQuiz; lblTests

Radio buttons for each of the three types of results e.g.
rbHomework; rbQuiz; rbTests

Buttons named:
btnAddEntry; btnCalculateAverage; btnClear

in btnAddEntry_Click event
SelectCase Checked
Case rbHomework
arrLHomework.Add(txtEnterScore.Text)
Case rbQuiz
arrlQuiz.Add(txtEnterScore.Text)
Case rbTests
arrLTests.Add(txtEnterScore.Text)
End Select

I will leave you to calculate the averages and display them in the labels and putting in a reset button.

If my assumptions are wrong, please correct me.

Meanwhile, look up in MSDN Help the articles on arrays and multidimension arrays.