trying to get streamreader to read and my calculations to populate my textbox
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Thread: trying to get streamreader to read and my calculations to populate my textbox

  1. #1
    Join Date
    Jul 2013
    Posts
    5

    trying to get streamreader to read and my calculations to populate my textbox

    Here what i have so far, the error in the stream
    [CODE]

    Public Class Form1

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


    Dim fileName As String = IO.File.ReadAllText("Grades.txt")
    Dim GPA As Double = 0
    Dim i As Integer = 0
    If IO.File.Exists(fileName) Then
    Dim sr As New IO.StreamReader(fileName)
    Dim line As String
    Dim finalscore As Double = 0
    Dim count As Integer = 0

    Using reader As = StreamReader = New StreamReader(fileName)
    While Not reader.EndOfStream

    End While

    line = reader.ReadLine()
    End Using



    If line.Trim() <> String.Empty Then
    finalscore += calculate(line)
    count += 1
    End If

    GPA = finalscore / (count * 3)
    TextBox1.Text = "student's GPa is " & Math.Round(GPA, 2).ToString()


    End If



    End Sub

    Private Function calculate(ByVal grade As String) As Double
    Dim value As Double = 0

    If grade = "A" Then
    value = 4.0 * 3

    ElseIf grade = "A-" Then
    value = 3.67 * 3

    ElseIf grade = "B+" Then
    value = 3.33 * 3

    ElseIf grade = "B" Then
    value = 3 * 3

    ElseIf grade = "B-" Then
    value = 2.67 * 3

    ElseIf grade = "C+" Then
    value = 2.33 * 3

    ElseIf grade = "C" Then
    value = 2.0 * 3

    ElseIf grade = "C-" Then
    value = 1.67 * 3

    ElseIf grade = "D" Then
    value = 1.0 * 3

    ElseIf grade = "F" Then
    value = 0

    End If

    Return value


    End Function
    End Class[\CODE]

  2. #2
    2kaud's Avatar
    2kaud is online now Super Moderator Power Poster
    Join Date
    Dec 2012
    Location
    England
    Posts
    5,872

    Re: trying to get streamreader to read and my calculations to populate my textbox

    This isn't c++ code! I think you have posted to the wrong forum. Try one of the visual basic forums.

    [moderator would you please move]
    All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!

    C++17 Compiler: Microsoft VS2017 (15.5.0)

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