Getting the sum and average help!

[NinjaLink]

Hey,

I am trying to create the sum of my values contained in MyArray variable simultaneously while assigning the values in the same loop. Afterwards, I want to find the average of the numbers after the loop finishes.

Problem: When I compute the numbers, I keep getting the same sum and average for whatever number I put in. How do I fix this problem?

Also, do you see any other errors in my code?

Private Sub btnCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCompute.Click



        Try

            Dim Num As Integer = Convert.ToInt32(txtNumber.Text)
            Dim MyArray As Integer()
            Dim Sum As Integer
            Dim Average As Double


            MyArray = New Integer(200) {}

            For I = 0 To MyArray.GetUpperBound(0)

                MyArray(I) = I * 2

            Next

            

            For I = 0 To MyArray.GetUpperBound(0)

                Sum = Sum + MyArray(I)

            Next


            Average = Sum / MyArray.GetUpperBound(0)


            If Num > 199 Then
                MessageBox.Show("Please enter a number less than 200")
                txtNumber.Clear()
            Else

                MessageBox.Show("The Sum of Array Numbers is" & Sum & "and the Average is" & Average)
            End If



        Catch formatExceptionParameter As FormatException

            If txtNumber.Text = String.Empty Then

                MessageBox.Show("Please enter a number less than 200.")

            Else

                MessageBox.Show("Invalid character. Please type in a number less than 200.", "Invalid Number Format", _
                                MessageBoxButtons.OK, MessageBoxIcon.Error)
            End If

        Catch OtherEx As Exception

            MessageBox.Show("There was a technical error, please email customer service for further assistance", "Unknown Error", _
                            MessageBoxButtons.OK, MessageBoxIcon.Error)

        End Try


    End Sub

[NinjaLink]

I think it is suppose to be

MyArray(I) = I + 10

because I need it to be 10+ more than the integer.

[timothybard]

You mention you get the same sum and average no matter which number you put in. Which line of code are you referring to when you say "for whatever number I put in".

Secondly, the following line

Average = Sum / MyArray.GetUpperBound(0)

should be

Average = Sum / (MyArray.GetUpperBound(0) + 1)

The upperBound function returns the largest index, which is one less of the number of items in the array.