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  4. VB code partially runs,,Can't see the problem [modified]

VB code partially runs,,Can't see the problem [modified]

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  • D dorkpixie

    Hi, I am newbie here; I hope that I am posting correctly. If not please let me know and I will fix that after this post... So here is my dilemma. Thank you for any help in advance. :) The program loads; I can pick a ticket type and the appropriate seats are listed in lstbox. I can type in how many ticket I want and clear the form. The Calculate cost button appears to do nothing at all. VB editor does not even give me an error; it just doesn't do anything. This was a homework, I have already handed it in though as is, so now I am just looking for guidance on where I went wrong. I don't want to move onto the next subject if I can't understand this one. Purpose: This application allows the user to unput data about ' the purchase of baseball tickets. Once the data is entered, ' the program will compute the cost of the tickets purchased. Option Strict On

    Public Class frmBaseBallTicketSales
    'Class Variables
    Private _decSeasonBoxSeat As Decimal = 2500D
    Private _decSeasonLowerSeat As Decimal = 1500D
    Private _decSingleBoxSeat As Decimal = 55D
    Private _decSingleLowerSeat As Decimal = 35D
    Private _decUpperSeat As Decimal = 25D
    Private _decStanding As Decimal = 15D
    Private _strSeasonBoxSeats As String = "Box Seats $2500"
    Private _strSeasonLowerDeck As String = "Lower Deck Seats $1500"
    Private _strSingleBoxSeats As String = "Box Seats $55"
    Private _strSingleLowerDeck As String = "Lower Deck Seats $35"
    Private _strUpperDeck As String = "Upper Deck Seats $25"
    Private _strSRO As String = "Standing Room Only $15"

    Private Sub cboTicketType_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboTicketType.SelectedIndexChanged
    'This event handler allows the user to enter choices on form.
    'Then it calls subprocesures to place seats in list box.

        Dim intTicketChoice As Integer
        intTicketChoice = Me.cboTicketType.SelectedIndex
        Me.lstSeats.Items.Clear()
        Select Case intTicketChoice
            Case 0
                SeasonTickets()
            Case 1
                SingleGameTickets()
        End Select
    

    'Make items visible in window.
    Me.lblNumberOfTickets.Visible = True
    Me.txtNumberOfTickets.Visible = True
    Me.lblSeatType.Visible = True
    Me.lstSeats.Visible = True
    Me.btnTicketCost.Visible = True
    Me.btnClear.Visible = True
    Me.lblCost.Visi

    L Offline
    L Offline
    Luc Pattyn
    wrote on last edited by
    #3

    I second that; it is unreadable right now. You could still edit the existing message though. :)

    Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]


    I only read formatted code with indentation, so please use PRE tags for code snippets.


    I'm not participating in frackin' Q&A, so if you want my opinion, ask away in a real forum (or on my profile page).


    D 1 Reply Last reply
    0
    • L Luc Pattyn

      I second that; it is unreadable right now. You could still edit the existing message though. :)

      Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]


      I only read formatted code with indentation, so please use PRE tags for code snippets.


      I'm not participating in frackin' Q&A, so if you want my opinion, ask away in a real forum (or on my profile page).


      D Offline
      D Offline
      dorkpixie
      wrote on last edited by
      #4

      When I pasted the code it was indented. I do not know how to indent other than using the tab key... I'm sorry.

      L 1 Reply Last reply
      0
      • D DJ Matthews

        It would be nice if you would put your code in some <pre></pre> tags so it easy to read.

        D Offline
        D Offline
        dorkpixie
        wrote on last edited by
        #5

        I have no idea how to use those tags. When I said newbie I meant very new. Like a baby just born.

        D L 2 Replies Last reply
        0
        • D dorkpixie

          I have no idea how to use those tags. When I said newbie I meant very new. Like a baby just born.

          D Offline
          D Offline
          DJ Matthews
          wrote on last edited by
          #6

          Do this when you edit your message: <pre> **Your code here** </pre>

          1 Reply Last reply
          0
          • D dorkpixie

            Hi, I am newbie here; I hope that I am posting correctly. If not please let me know and I will fix that after this post... So here is my dilemma. Thank you for any help in advance. :) The program loads; I can pick a ticket type and the appropriate seats are listed in lstbox. I can type in how many ticket I want and clear the form. The Calculate cost button appears to do nothing at all. VB editor does not even give me an error; it just doesn't do anything. This was a homework, I have already handed it in though as is, so now I am just looking for guidance on where I went wrong. I don't want to move onto the next subject if I can't understand this one. Purpose: This application allows the user to unput data about ' the purchase of baseball tickets. Once the data is entered, ' the program will compute the cost of the tickets purchased. Option Strict On

            Public Class frmBaseBallTicketSales
            'Class Variables
            Private _decSeasonBoxSeat As Decimal = 2500D
            Private _decSeasonLowerSeat As Decimal = 1500D
            Private _decSingleBoxSeat As Decimal = 55D
            Private _decSingleLowerSeat As Decimal = 35D
            Private _decUpperSeat As Decimal = 25D
            Private _decStanding As Decimal = 15D
            Private _strSeasonBoxSeats As String = "Box Seats $2500"
            Private _strSeasonLowerDeck As String = "Lower Deck Seats $1500"
            Private _strSingleBoxSeats As String = "Box Seats $55"
            Private _strSingleLowerDeck As String = "Lower Deck Seats $35"
            Private _strUpperDeck As String = "Upper Deck Seats $25"
            Private _strSRO As String = "Standing Room Only $15"

            Private Sub cboTicketType_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboTicketType.SelectedIndexChanged
            'This event handler allows the user to enter choices on form.
            'Then it calls subprocesures to place seats in list box.

                Dim intTicketChoice As Integer
                intTicketChoice = Me.cboTicketType.SelectedIndex
                Me.lstSeats.Items.Clear()
                Select Case intTicketChoice
                    Case 0
                        SeasonTickets()
                    Case 1
                        SingleGameTickets()
                End Select
            

            'Make items visible in window.
            Me.lblNumberOfTickets.Visible = True
            Me.txtNumberOfTickets.Visible = True
            Me.lblSeatType.Visible = True
            Me.lstSeats.Visible = True
            Me.btnTicketCost.Visible = True
            Me.btnClear.Visible = True
            Me.lblCost.Visi

            L Offline
            L Offline
            Lost User
            wrote on last edited by
            #7

            dorkpixie wrote:

            appears to do nothing at all

            What does that mean? You click the button and no code runs? You click the button and the code runs but gives no output? Have you stepped through the code using the debugger?

            Why is common sense not common? Never argue with an idiot. They will drag you down to their level where they are an expert. Sometimes it takes a lot of work to be lazy Individuality is fine, as long as we do it together - F. Burns

            D 1 Reply Last reply
            0
            • D dorkpixie

              I have no idea how to use those tags. When I said newbie I meant very new. Like a baby just born.

              L Offline
              L Offline
              Lost User
              wrote on last edited by
              #8

              Edit your post. Select the code segments then click on the "code block" link on the line above :)

              Why is common sense not common? Never argue with an idiot. They will drag you down to their level where they are an expert. Sometimes it takes a lot of work to be lazy Individuality is fine, as long as we do it together - F. Burns

              D 1 Reply Last reply
              0
              • D dorkpixie

                When I pasted the code it was indented. I do not know how to indent other than using the tab key... I'm sorry.

                L Offline
                L Offline
                Luc Pattyn
                wrote on last edited by
                #9

                outside of PRE tags, tabs are just spaces, and multiple spaces get ignored. Inside PRE tags, it all works pretty much like in a code editor. :)

                Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]


                I only read formatted code with indentation, so please use PRE tags for code snippets.


                I'm not participating in frackin' Q&A, so if you want my opinion, ask away in a real forum (or on my profile page).


                1 Reply Last reply
                0
                • L Lost User

                  Edit your post. Select the code segments then click on the "code block" link on the line above :)

                  Why is common sense not common? Never argue with an idiot. They will drag you down to their level where they are an expert. Sometimes it takes a lot of work to be lazy Individuality is fine, as long as we do it together - F. Burns

                  D Offline
                  D Offline
                  dorkpixie
                  wrote on last edited by
                  #10

                  Thank you very much!! I got it, I think.

                  L 1 Reply Last reply
                  0
                  • L Lost User

                    dorkpixie wrote:

                    appears to do nothing at all

                    What does that mean? You click the button and no code runs? You click the button and the code runs but gives no output? Have you stepped through the code using the debugger?

                    Why is common sense not common? Never argue with an idiot. They will drag you down to their level where they are an expert. Sometimes it takes a lot of work to be lazy Individuality is fine, as long as we do it together - F. Burns

                    D Offline
                    D Offline
                    dorkpixie
                    wrote on last edited by
                    #11

                    Click the button and get no output at all. No errors either. Weirdest non running code I have ever written.

                    L 1 Reply Last reply
                    0
                    • D dorkpixie

                      Click the button and get no output at all. No errors either. Weirdest non running code I have ever written.

                      L Offline
                      L Offline
                      Lost User
                      wrote on last edited by
                      #12

                      Okay if you click the button and no code runs at all, check that the button is actually hooked up to the function through the Events property sheet. If the button is hooked to the event handler then set a breakpoint in the event handler and step through the code until you narrow down where the problem is.

                      Why is common sense not common? Never argue with an idiot. They will drag you down to their level where they are an expert. Sometimes it takes a lot of work to be lazy Individuality is fine, as long as we do it together - F. Burns

                      1 Reply Last reply
                      0
                      • D dorkpixie

                        Thank you very much!! I got it, I think.

                        L Offline
                        L Offline
                        Lost User
                        wrote on last edited by
                        #13

                        You're welcome. Looks much more gooder :-)

                        Why is common sense not common? Never argue with an idiot. They will drag you down to their level where they are an expert. Sometimes it takes a lot of work to be lazy Individuality is fine, as long as we do it together - F. Burns

                        1 Reply Last reply
                        0
                        • D dorkpixie

                          Hi, I am newbie here; I hope that I am posting correctly. If not please let me know and I will fix that after this post... So here is my dilemma. Thank you for any help in advance. :) The program loads; I can pick a ticket type and the appropriate seats are listed in lstbox. I can type in how many ticket I want and clear the form. The Calculate cost button appears to do nothing at all. VB editor does not even give me an error; it just doesn't do anything. This was a homework, I have already handed it in though as is, so now I am just looking for guidance on where I went wrong. I don't want to move onto the next subject if I can't understand this one. Purpose: This application allows the user to unput data about ' the purchase of baseball tickets. Once the data is entered, ' the program will compute the cost of the tickets purchased. Option Strict On

                          Public Class frmBaseBallTicketSales
                          'Class Variables
                          Private _decSeasonBoxSeat As Decimal = 2500D
                          Private _decSeasonLowerSeat As Decimal = 1500D
                          Private _decSingleBoxSeat As Decimal = 55D
                          Private _decSingleLowerSeat As Decimal = 35D
                          Private _decUpperSeat As Decimal = 25D
                          Private _decStanding As Decimal = 15D
                          Private _strSeasonBoxSeats As String = "Box Seats $2500"
                          Private _strSeasonLowerDeck As String = "Lower Deck Seats $1500"
                          Private _strSingleBoxSeats As String = "Box Seats $55"
                          Private _strSingleLowerDeck As String = "Lower Deck Seats $35"
                          Private _strUpperDeck As String = "Upper Deck Seats $25"
                          Private _strSRO As String = "Standing Room Only $15"

                          Private Sub cboTicketType_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboTicketType.SelectedIndexChanged
                          'This event handler allows the user to enter choices on form.
                          'Then it calls subprocesures to place seats in list box.

                              Dim intTicketChoice As Integer
                              intTicketChoice = Me.cboTicketType.SelectedIndex
                              Me.lstSeats.Items.Clear()
                              Select Case intTicketChoice
                                  Case 0
                                      SeasonTickets()
                                  Case 1
                                      SingleGameTickets()
                              End Select
                          

                          'Make items visible in window.
                          Me.lblNumberOfTickets.Visible = True
                          Me.txtNumberOfTickets.Visible = True
                          Me.lblSeatType.Visible = True
                          Me.lstSeats.Visible = True
                          Me.btnTicketCost.Visible = True
                          Me.btnClear.Visible = True
                          Me.lblCost.Visi

                          D Offline
                          D Offline
                          DaveAuld
                          wrote on last edited by
                          #14
                          1. in your btnTicketCost, and an else clause to the If block, and display a validation error message, your Validate Ticket might never be returning True, hence never resulting in any output. 2) If #1 above never returns True, start putting debug statements in the function to try and establish which part(s) is/are causing the validation to fail.

                          Dave Don't forget to rate messages!
                          Find Me On: Web|Facebook|Twitter|LinkedIn
                          Waving? dave.m.auld[at]googlewave.com

                          1 Reply Last reply
                          0
                          • D dorkpixie

                            Hi, I am newbie here; I hope that I am posting correctly. If not please let me know and I will fix that after this post... So here is my dilemma. Thank you for any help in advance. :) The program loads; I can pick a ticket type and the appropriate seats are listed in lstbox. I can type in how many ticket I want and clear the form. The Calculate cost button appears to do nothing at all. VB editor does not even give me an error; it just doesn't do anything. This was a homework, I have already handed it in though as is, so now I am just looking for guidance on where I went wrong. I don't want to move onto the next subject if I can't understand this one. Purpose: This application allows the user to unput data about ' the purchase of baseball tickets. Once the data is entered, ' the program will compute the cost of the tickets purchased. Option Strict On

                            Public Class frmBaseBallTicketSales
                            'Class Variables
                            Private _decSeasonBoxSeat As Decimal = 2500D
                            Private _decSeasonLowerSeat As Decimal = 1500D
                            Private _decSingleBoxSeat As Decimal = 55D
                            Private _decSingleLowerSeat As Decimal = 35D
                            Private _decUpperSeat As Decimal = 25D
                            Private _decStanding As Decimal = 15D
                            Private _strSeasonBoxSeats As String = "Box Seats $2500"
                            Private _strSeasonLowerDeck As String = "Lower Deck Seats $1500"
                            Private _strSingleBoxSeats As String = "Box Seats $55"
                            Private _strSingleLowerDeck As String = "Lower Deck Seats $35"
                            Private _strUpperDeck As String = "Upper Deck Seats $25"
                            Private _strSRO As String = "Standing Room Only $15"

                            Private Sub cboTicketType_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboTicketType.SelectedIndexChanged
                            'This event handler allows the user to enter choices on form.
                            'Then it calls subprocesures to place seats in list box.

                                Dim intTicketChoice As Integer
                                intTicketChoice = Me.cboTicketType.SelectedIndex
                                Me.lstSeats.Items.Clear()
                                Select Case intTicketChoice
                                    Case 0
                                        SeasonTickets()
                                    Case 1
                                        SingleGameTickets()
                                End Select
                            

                            'Make items visible in window.
                            Me.lblNumberOfTickets.Visible = True
                            Me.txtNumberOfTickets.Visible = True
                            Me.lblSeatType.Visible = True
                            Me.lstSeats.Visible = True
                            Me.btnTicketCost.Visible = True
                            Me.btnClear.Visible = True
                            Me.lblCost.Visi

                            W Offline
                            W Offline
                            William Winner
                            wrote on last edited by
                            #15

                            First, they told you about the pre tag, but what they didn't tell you was that you can specify which language you're using which helps with the coloring. In your case, you're pre tags should look like: <pre lang="vbnet"> Beyond that, I'll just comment on what I see... I don't know if your assignment was to use decimal types or not, but it doesn't look like it's necessary since you're dealing wholly with integer values and should never get any decimal values. I also don't know if you were told to use Select Case statements, but you can use If/Else if they're small statments...for instance you wrote:

                            Select Case intTicketChoice
                            Case 0
                            SeasonTickets()
                            Case 1
                            SingleGameTickets()
                            End Select

                            which is a total of 11 words and 78 characters.

                            If intTicketChoice = 0 Then
                            SeasonTickets()
                            Else
                            SingleGameTickets()
                            End If

                            is 10 words and 66 characters. Also, the If/Else should be streamlined as far as the number of cycles it takes to evaluate since I assume the Select Case just builds a series of If/ElseIf statements. Let's start with btnTicketCost_Click. You have some strange code here. First, what is it that it needs to do? Well, it looks like it needs to check to make sure that a ticket type was selected and that an appropriate number of tickets were selected for purchase and then adds up the total. So what is it that you actually do? You create intNumberTix, but then you never set it to anything. You then run a function to validate the number of tickets. That checks to see if the number in the TextBox was between 1 and 20. If it isn't, you show a MessageBox asking them to re-enter the number of tickets, I guess. First, that ValidateNumberTix is way too long. It could just be:

                            Private Function ValidateNumberTix() as Boolean
                            If Not IsNumeric(Me.txtNumberOfTickets.Text) Then
                            ResetNumberTix()
                            Return False
                            Else
                            Dim intNumberTix As Long = CLng(Me.txtNumberOfTickets.Text)
                            If intNumberTix < 1 Or intNumberTix > 20 Then
                            ResetNumberTix()
                            Return False
                            End If
                            End If
                            Return True
                            End Function

                            Private Sub ResetNumberTix()
                            MessageBox.Show("Please enter the number of tickets you would like to buy (1-20)", "Error")
                            Me.txtNumberOfTickets.Focus()
                            Me.txtNumberOfTickets.Clear()
                            End Sub

                            You create extra variables in memory that you don't need which take extra cycles. Back to

                            D 1 Reply Last reply
                            0
                            • D dorkpixie

                              Hi, I am newbie here; I hope that I am posting correctly. If not please let me know and I will fix that after this post... So here is my dilemma. Thank you for any help in advance. :) The program loads; I can pick a ticket type and the appropriate seats are listed in lstbox. I can type in how many ticket I want and clear the form. The Calculate cost button appears to do nothing at all. VB editor does not even give me an error; it just doesn't do anything. This was a homework, I have already handed it in though as is, so now I am just looking for guidance on where I went wrong. I don't want to move onto the next subject if I can't understand this one. Purpose: This application allows the user to unput data about ' the purchase of baseball tickets. Once the data is entered, ' the program will compute the cost of the tickets purchased. Option Strict On

                              Public Class frmBaseBallTicketSales
                              'Class Variables
                              Private _decSeasonBoxSeat As Decimal = 2500D
                              Private _decSeasonLowerSeat As Decimal = 1500D
                              Private _decSingleBoxSeat As Decimal = 55D
                              Private _decSingleLowerSeat As Decimal = 35D
                              Private _decUpperSeat As Decimal = 25D
                              Private _decStanding As Decimal = 15D
                              Private _strSeasonBoxSeats As String = "Box Seats $2500"
                              Private _strSeasonLowerDeck As String = "Lower Deck Seats $1500"
                              Private _strSingleBoxSeats As String = "Box Seats $55"
                              Private _strSingleLowerDeck As String = "Lower Deck Seats $35"
                              Private _strUpperDeck As String = "Upper Deck Seats $25"
                              Private _strSRO As String = "Standing Room Only $15"

                              Private Sub cboTicketType_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboTicketType.SelectedIndexChanged
                              'This event handler allows the user to enter choices on form.
                              'Then it calls subprocesures to place seats in list box.

                                  Dim intTicketChoice As Integer
                                  intTicketChoice = Me.cboTicketType.SelectedIndex
                                  Me.lstSeats.Items.Clear()
                                  Select Case intTicketChoice
                                      Case 0
                                          SeasonTickets()
                                      Case 1
                                          SingleGameTickets()
                                  End Select
                              

                              'Make items visible in window.
                              Me.lblNumberOfTickets.Visible = True
                              Me.txtNumberOfTickets.Visible = True
                              Me.lblSeatType.Visible = True
                              Me.lstSeats.Visible = True
                              Me.btnTicketCost.Visible = True
                              Me.btnClear.Visible = True
                              Me.lblCost.Visi

                              W Offline
                              W Offline
                              William Winner
                              wrote on last edited by
                              #16

                              BTW...the simple answer is #1) You never set intNumberTix #2) You use intSeatType twice meaning two different things...first the seat type (lower, box, etc...), then the ticket type (season vs. single)

                                  'Call a function to make sure ticket type selected.
                                  **intSeatType** = ValidateSeatSelection(blnSeatTypeIsSelected, strSelectedSeat)
                                  'If the number of tickets ordered is valid, calculate the cost.
                                  If (blnNumberTixIsValid And blnSeatTypeIsSelected) Then
                                      **intSeatType** = Me.cboTicketType.SelectedIndex
                                      Select Case intSeatType
                                          Case 0
                                              decTotalCost = SeasonTicketsFindCost(**intSeatType**, \_
                                                                                   intNumberTix)
                                          Case 1
                                              decTotalCost = SingleTicketsFindCost(**intSeatType**, \_
                                                                                   intNumberTix)
                                      End Select
                              
                              1 Reply Last reply
                              0
                              • W William Winner

                                First, they told you about the pre tag, but what they didn't tell you was that you can specify which language you're using which helps with the coloring. In your case, you're pre tags should look like: <pre lang="vbnet"> Beyond that, I'll just comment on what I see... I don't know if your assignment was to use decimal types or not, but it doesn't look like it's necessary since you're dealing wholly with integer values and should never get any decimal values. I also don't know if you were told to use Select Case statements, but you can use If/Else if they're small statments...for instance you wrote:

                                Select Case intTicketChoice
                                Case 0
                                SeasonTickets()
                                Case 1
                                SingleGameTickets()
                                End Select

                                which is a total of 11 words and 78 characters.

                                If intTicketChoice = 0 Then
                                SeasonTickets()
                                Else
                                SingleGameTickets()
                                End If

                                is 10 words and 66 characters. Also, the If/Else should be streamlined as far as the number of cycles it takes to evaluate since I assume the Select Case just builds a series of If/ElseIf statements. Let's start with btnTicketCost_Click. You have some strange code here. First, what is it that it needs to do? Well, it looks like it needs to check to make sure that a ticket type was selected and that an appropriate number of tickets were selected for purchase and then adds up the total. So what is it that you actually do? You create intNumberTix, but then you never set it to anything. You then run a function to validate the number of tickets. That checks to see if the number in the TextBox was between 1 and 20. If it isn't, you show a MessageBox asking them to re-enter the number of tickets, I guess. First, that ValidateNumberTix is way too long. It could just be:

                                Private Function ValidateNumberTix() as Boolean
                                If Not IsNumeric(Me.txtNumberOfTickets.Text) Then
                                ResetNumberTix()
                                Return False
                                Else
                                Dim intNumberTix As Long = CLng(Me.txtNumberOfTickets.Text)
                                If intNumberTix < 1 Or intNumberTix > 20 Then
                                ResetNumberTix()
                                Return False
                                End If
                                End If
                                Return True
                                End Function

                                Private Sub ResetNumberTix()
                                MessageBox.Show("Please enter the number of tickets you would like to buy (1-20)", "Error")
                                Me.txtNumberOfTickets.Focus()
                                Me.txtNumberOfTickets.Clear()
                                End Sub

                                You create extra variables in memory that you don't need which take extra cycles. Back to

                                D Offline
                                D Offline
                                dorkpixie
                                wrote on last edited by
                                #17

                                There's a couple of things... You're help is awesome and easy to understand. However, since this is still a beginner VB class there are some things we have not been taught to use yet such as: Dim intNumberTix As Long = CLng(Me.txtNumberOfTickets.Text) have no idea what Long and CLng is.. and If lstSeats.SelectedItems.Count = 0 Then, we have not done counts yet. So while I generally understand what this means: If intSeatType = 0 Then lngTotalCost = SeasonTicketsFindCost(lstSeats.SelectedIndex, _ CInt(Me.txtNumberOfTickets.Text)) Else lngTotalCost = SingleTicketsFindCost(lstSeats.SelectedIndex, _ CInt(Me.txtNumberOfTickets.Text)) End If lblCost.Text = String.Format("{0:C}",lngTotalCost) I have never seen lng or Long as a variable type. I can however take what you have given me and put it into what we have learned. Sometimes in the introductory courses they kind of force you to use certain things. Such as the way the splash screen is timed. I am glad though that I have gotten feedback from others who have more experience so that I do not miss these lessons. Hopefully classes will get to them so I don't graduate with completely wrong information. Thank you again for your help. Do you want me to post working code when I finish it?

                                W 1 Reply Last reply
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                                • D dorkpixie

                                  There's a couple of things... You're help is awesome and easy to understand. However, since this is still a beginner VB class there are some things we have not been taught to use yet such as: Dim intNumberTix As Long = CLng(Me.txtNumberOfTickets.Text) have no idea what Long and CLng is.. and If lstSeats.SelectedItems.Count = 0 Then, we have not done counts yet. So while I generally understand what this means: If intSeatType = 0 Then lngTotalCost = SeasonTicketsFindCost(lstSeats.SelectedIndex, _ CInt(Me.txtNumberOfTickets.Text)) Else lngTotalCost = SingleTicketsFindCost(lstSeats.SelectedIndex, _ CInt(Me.txtNumberOfTickets.Text)) End If lblCost.Text = String.Format("{0:C}",lngTotalCost) I have never seen lng or Long as a variable type. I can however take what you have given me and put it into what we have learned. Sometimes in the introductory courses they kind of force you to use certain things. Such as the way the splash screen is timed. I am glad though that I have gotten feedback from others who have more experience so that I do not miss these lessons. Hopefully classes will get to them so I don't graduate with completely wrong information. Thank you again for your help. Do you want me to post working code when I finish it?

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                                  William Winner
                                  wrote on last edited by
                                  #18

                                  Hmm...that's curious...you were taught about Decimals before Longs? A Long is just a larger Integer. Decimal is definitely not a standard type. The 4 standard VB numeric types are Integer, Long, Float, and Double. An Int is only good up to 32,767. A Long goes beyond that. CLng is just a conversion method. There are many of these...CInt, CDec, CLng, CDbl...So, if you pass in a string value to any of them, it will try to return whatever number is in that string in the selected type. Or it you pass an Integer into CDbl, it will return that Integer as a Double. As far as the SelectedItems.Count, that is just a property within the ListBox. I assume that since you are allowed to use a ListBox, you should be allowed to use any of its methods. That is just one of them. But, I know about profs not wanting you to skip ahead. In one of my classes, I read ahead and found the switch in C++ (the same as VB's Select) and used it instead of a series of for loops and was told that I wasn't to use something we hadn't been taught yet. And you may not feel like you need one, but when I was in college, I was a tutor and I hope that it helped the people that I tutored. Normally, schools provide the service free of charge and it can be really helpful to have someone who's gotten further helping you understand how to structure a program and even giving hints on what has worked for them and what hasn't.

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                                  • W William Winner

                                    Hmm...that's curious...you were taught about Decimals before Longs? A Long is just a larger Integer. Decimal is definitely not a standard type. The 4 standard VB numeric types are Integer, Long, Float, and Double. An Int is only good up to 32,767. A Long goes beyond that. CLng is just a conversion method. There are many of these...CInt, CDec, CLng, CDbl...So, if you pass in a string value to any of them, it will try to return whatever number is in that string in the selected type. Or it you pass an Integer into CDbl, it will return that Integer as a Double. As far as the SelectedItems.Count, that is just a property within the ListBox. I assume that since you are allowed to use a ListBox, you should be allowed to use any of its methods. That is just one of them. But, I know about profs not wanting you to skip ahead. In one of my classes, I read ahead and found the switch in C++ (the same as VB's Select) and used it instead of a series of for loops and was told that I wasn't to use something we hadn't been taught yet. And you may not feel like you need one, but when I was in college, I was a tutor and I hope that it helped the people that I tutored. Normally, schools provide the service free of charge and it can be really helpful to have someone who's gotten further helping you understand how to structure a program and even giving hints on what has worked for them and what hasn't.

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                                    dorkpixie
                                    wrote on last edited by
                                    #19

                                    William, Thank you very much for your insights and help. i do not think this particular professor would knock me for going ahead but I didn't want to try him. When I got his reveiw of my homework he said, "There were only two problems with {my} code which were giving {me} problems. The first problem is {I} forgot to set the number of tickets based on the entered value for the number of tickets. The other problem is {my} line for converting the value to string {....} Should be:

                                    'display cost.
                                    lblCost.txt = decTotalCost.ToString

                                    "Once {he} fixed those things the program worked great." Now, I agree with you that there was just too much code. But in an introductory class they are looking that mainly the program works and that the UI does what it is supposed to do. I was surprised that I got an A but pretty happy. The Decimal thing; as you can see my prof also used decimal, the program assignment as written in the book, wants the total cost to be in the format of $8888.00. So we were kind of forced into the dec format; I found it annoying as well since it added to the code and also made it confusing when working with both integers and decimals. Anyway, I found all of you expertise helpful and if I could afford to pay you to tutor; I would see if you were up for the challenge; however like most students I am poooooor. The university at this time does not have VB tutors, but as soon as they do, they will let me know. ;) Thank you again. I will definitely be back!! This site is awesome as a resource and for help. Oh, and we're learning arrays this unit so I may need the help ;0 Thanks again, looking forward to talking with you again.

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