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VB.NET Discussion Thread
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Nov 3rd, 2009

How to add strings that contain amounts

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vb.net Syntax (Toggle Plain Text)
'Radio Choice Selection
        Console.WriteLine("Please enter the Radio Choice for your vehicle: ")
        Console.WriteLine("Enter 1 for AM/FM Radio")
        Console.WriteLine("Enter 2 for AM/FM/CD/DVD")
        strRadioChoice = Console.ReadLine()
        Select Case strRadioChoice
            Case "1"
                Console.WriteLine("Price : $100")
 
            Case "2"
                Console.WriteLine("Price : $400")
 
            Case Else
                Console.WriteLine("Invalid selection")
 
        End Select
 
        SellingPrice = BasePrice + strEngineChoice + strInteriorChoice + strRadioChoice + ShippingCharge + DealerCharge
        Console.WriteLine("The total selling price for your vehicle is $" + SellingPrice)
        Console.WriteLine()
        Console.WriteLine("Press Enter to Exit")
        Console.ReadLine()
'Radio Choice Selection
        Console.WriteLine("Please enter the Radio Choice for your vehicle: ")
        Console.WriteLine("Enter 1 for AM/FM Radio")
        Console.WriteLine("Enter 2 for AM/FM/CD/DVD")
        strRadioChoice = Console.ReadLine()
        Select Case strRadioChoice
            Case "1"
                Console.WriteLine("Price : $100")

            Case "2"
                Console.WriteLine("Price : $400")

            Case Else
                Console.WriteLine("Invalid selection")

        End Select

        SellingPrice = BasePrice + strEngineChoice + strInteriorChoice + strRadioChoice + ShippingCharge + DealerCharge
        Console.WriteLine("The total selling price for your vehicle is $" + SellingPrice)
        Console.WriteLine()
        Console.WriteLine("Press Enter to Exit")
        Console.ReadLine()

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JRabbit2307

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Nov 3rd, 2009

Re: How to add strings that contain amounts

You need to be storing these individual values into numeric variables to be calculated at the end.

Click to Expand / Collapse Quote originally posted by JRabbit2307 ...

vb.net Syntax (Toggle Plain Text)
'Radio Choice
Selection
 
Dim decRadioPrice As Decimal
 
        Console.WriteLine("Please enter the Radio Choice for your vehicle: ")
        Console.WriteLine("Enter 1 for AM/FM Radio")
        Console.WriteLine("Enter 2 for AM/FM/CD/DVD")
        strRadioChoice = Console.ReadLine()
        Select Case strRadioChoice
            Case "1"
                Console.WriteLine("Price : $100")
                decRadioPrice = 100.00
            Case "2"
                Console.WriteLine("Price : $400")
                 decRadioPrice = 400.00
            Case Else
                Console.WriteLine("Invalid selection")
 
        End Select
 
        'SellingPrice = BasePrice + strEngineChoice + strInteriorChoice 
        '+ strRadioChoice + ShippingCharge + DealerCharge
 
         decTotal = decBasePrice + desEnginePrice + decInterior + decRadio etc
        Console.WriteLine("The total selling price for your vehicle is $" + FormatCurrencty(decTotal))
        Console.WriteLine()
        Console.WriteLine("Press Enter to Exit")
        Console.ReadLine()
'Radio Choice Selection Dim decRadioPrice As Decimal Console.WriteLine("Please enter the Radio Choice for your vehicle: ") Console.WriteLine("Enter 1 for AM/FM Radio") Console.WriteLine("Enter 2 for AM/FM/CD/DVD") strRadioChoice = Console.ReadLine() Select Case strRadioChoice Case "1" Console.WriteLine("Price : $100") decRadioPrice = 100.00 Case "2" Console.WriteLine("Price : $400") decRadioPrice = 400.00 Case Else Console.WriteLine("Invalid selection") End Select 'SellingPrice = BasePrice + strEngineChoice + strInteriorChoice '+ strRadioChoice + ShippingCharge + DealerCharge decTotal = decBasePrice + desEnginePrice + decInterior + decRadio etc Console.WriteLine("The total selling price for your vehicle is $" + FormatCurrencty(decTotal)) Console.WriteLine() Console.WriteLine("Press Enter to Exit") Console.ReadLine()

TomW

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Posting Whiz

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Nov 3rd, 2009

Re: How to add strings that contain amounts

Or you can use Integer.Parse() (or Double.Parse(), etc) at that line where you add all the numbers. Maybe add some exception around it, too, .Parse() is pretty picky and throws exceptions when it doesn't get what it wants.

mikiurban

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Nov 3rd, 2009

Re: How to add strings that contain amounts

You should use integer.TryParse() or decimal.TryParse() instead of handling the exception. Throwing exceptions is a very expensive process and if you have exceptions being thrown in calculations (where it can occur over and over in loops) it can bring a system to a halt depending on the amount of data.

sknake

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Nov 3rd, 2009

Re: How to add strings that contain amounts

TryParse is much better than Parse (unless you want exceptions I suppose) . My current job is in .Net 1.1, and I don't get to use TryParse, so I forgot about it. Yes, I do cry a little inside.

mikiurban

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Nov 5th, 2009

Re: How to add strings that contain amounts

Click to Expand / Collapse Quote originally posted by mikiurban ...

Or you can use Integer.Parse() (or Double.Parse(), etc) at that line where you add all the numbers. Maybe add some exception around it, too, .Parse() is pretty picky and throws exceptions when it doesn't get what it wants.

mikiurban are you saying to do decTotal = decBasePrice + decEnginePrice + decInterior + decRadio + decShippingCharge + decDealerCharge
Console.WriteLine("The total selling price for your vehicle is $" + Integer.Parse(decTotal))
I tried integer.parse() and parse.() neither worked

JRabbit2307

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Nov 5th, 2009

Re: How to add strings that contain amounts

Click to Expand / Collapse Quote originally posted by sknake ...

You should use integer.TryParse() or decimal.TryParse() instead of handling the exception. Throwing exceptions is a very expensive process and if you have exceptions being thrown in calculations (where it can occur over and over in loops) it can bring a system to a halt depending on the amount of data.

sknake i tried that and its saying "overload resolution failed because no accessible 'TryParse' accepts this number of arguments

JRabbit2307

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Nov 5th, 2009

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Re: How to add strings that contain amounts

Cast with the "CInt" function

Last edited by jbennet; Nov 5th, 2009 at 6:20 am.

jbennet

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Nov 5th, 2009

Re: How to add strings that contain amounts

Click to Expand / Collapse Quote originally posted by jbennet ...

Cast with the "CInt" function

jbennet i'm new to programming and what am i supposed to do with "CInt"???

JRabbit2307

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Re: How to add strings that contain amounts

CInt casts a string to an integer. e.g.

VB.NET Syntax (Toggle Plain Text)
Dim answer As Integer
answer =  CInt(TextBox1.Text) + CInt(TextBox2.Text)
Dim answer As Integer
answer =  CInt(TextBox1.Text) + CInt(TextBox2.Text)

Will add two strings (the data in the textboxes) and store the result in an integer variable called answer.

Look at:
http://www.vbdotnetforums.com/vb-net...pose-cint.html

Last edited by jbennet; Nov 5th, 2009 at 6:35 am.

jbennet

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