[2005] Help with calling functions

I need someone to explain to me why this code constantly returns a 0 value when I attmept to run this program. I'm about at my witts end and ready to jump out of a window of a very tall building!

HTML Code:

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Public Class FrmTravel
    'Define all variables to be used within the application
    'both locally and form wide.
    Dim decDays As Decimal
    Dim decAirfare As Decimal
    Dim decCarRentals As Decimal
    Dim sngMiles As Single
    Dim decParkingFees As Decimal
    Dim decTaxi As Decimal
    Dim decSeminar As Decimal
    Dim decLodging As Decimal
    Dim decTotalCost As Decimal
    Dim decAmountExempt As Decimal
    Dim decEndCost As Decimal
    Dim decMeals As Decimal            'price put in by user
    Dim decMealIncurred As Decimal      'price going in incurred txtbox
    Dim decMealTotal As Decimal
    Dim decMealExempt As Decimal        'going into the exempt txtbox



    'All constants listed.  Each value is the maximum
    'amount that is reimbursable by the company.
    Const conMEALS As Decimal = 37D
    Const conPARKINGFEES As Decimal = 10D
    Const conTAXI As Decimal = 20D
    Const conLODGING As Decimal = 95D
    Const conPRIVATE As Decimal = 0.27D

    'Submit the calcMeals sub to determine the cost of food
    'and what is reimbursable.
    Function calcMeals() As Decimal
        decDays = CDec(cboDays.SelectedItem().ToString)
        decMeals = CDec(txtMeals.Text.ToString)
        decMealTotal = decMeals / decDays
        Return decMealTotal
    End Function
 


    Private Sub btnCalcCost_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalcCost.Click
        'process to begin reimbursement of money if any is due.
        If calcMeals() > conMEALS Then
            lblTotalCost.Text = FormatCurrency(CDec(calcMeals()))
        End If

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I only have two subs posted here. I am continually getting a 0 when I hit the calc button. I believe the function is being called correctly and I have it in a logical statement correctly. Just looking for some incite.

Thanks,
Abe

Have you tried doing some messageboxes or debug statements to see what is being returned. A good place to start would be to see whether the values returned by cboDays and txtMeals are what you expect them to be.

Hope this helps :thumb:

Yeah I have been using a lbl on the form to test the inputs to the mathematics that I'm performing. Those come out completely correct. I know the problem is involved with the click event on the calc button... at least I am pretty sure, been looking at this problem for about 12 hours now and I think I'm doing more harm then good.

Well put a messagebox before the return line in the function and see what value decMealTotal is and then in another messagebox in the button click function say
messagebox.show(calcMeals().tostring)

What do they say?

Also just as an observation....i dont think you need to do CDec(calcMeals()) in the button click event because you are already returning a decimal.

Now I have it working but it seems that its making me put a lot of redunant code as you can see with the section I posted below. I have class wide variables declared but yet it makes me declare them per subroutine. Good news is the math started working, although I really hate to swap one problem for another one.

Code:

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  Dim decMeals As Decimal            'price put in by user
    Dim decMealExempt As Decimal        'going into the exempt txtbox
    Dim decTotalfood As Decimal        'total cost of food on trip


    'All constants listed.  Each value is the maximum
    'amount that is reimbursable by the company.
    Const conMEALS As Decimal = 37D
    Const conPARKINGFEES As Decimal = 10D
    Const conTAXI As Decimal = 20D
    Const conLODGING As Decimal = 95D
    Const conPRIVATE As Decimal = 0.27D

    'Submit the calcMeals sub to determine the cost of food
    'and what is reimbursable.
    Function calcMeals(ByVal decMealTotal As Decimal) As Decimal
        decDays = CDec(cboDays.SelectedItem().ToString)
        decMeals = CDec(txtMeals.Text.ToString)
        decMealTotal = decMeals / decDays
        Return decMealTotal
    End Function

 


    Private Sub btnCalcCost_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalcCost.Click
        'process to begin reimbursement of money if any is due.
        Dim decMealTotal As Decimal
        Dim decMealExempt As Decimal
        'MessageBox.Show(CDec(calcMeals(decMealTotal)).ToString)
        If (calcMeals(decMealTotal)) > conMEALS Then
            decMealExempt = 0
            lblTotalCost.Text = (CStr((calcMeals(decMealTotal))))

        End If

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I really have no clue at all. I wouldn't think I would have to double declare like that which only tells me that something is wrong that I can't see.