Having some troubles with this script.

[Jeffro]

Ok I have some troubles with my code. I don't need a full solution. I just want to know what i should do best for this situation.

The idea is to calculate the amount of money that will be on the bank. I think my formula is right but there are errors i just cant fix. Mostly concerning doubles. Please look at my code and tell me what i did wrong:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
 
namespace Opdracht5
{
    public partial class Form1 : Form
    {
        double geld;
        double geldtemp;
        int teller;
        double stort2 = Convert.ToDouble(stort.Text);
        double rente2 = Convert.ToDouble(rente.Text);
        int jaren2 = int.Parse(jaren.Text);
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            geldtemp = rente2 + 100;
            geldtemp = geldtemp / 100;
            while (teller < jaren)
            {
                geld = stort2 + geld;
                geld = geld * geldtemp;
                teller++;
            }
            output.Text = "" + geld;
        }
    }
}
 

[anonymous]

This is C# which should go to the .NET forum.

[JosAH]

This is C# which should go to the .NET forum.

Consider it done.

kind regards,

Jos

[kenobewan]

Errors and line numbers please.

[Jeffro]

Error 1 A field initializer cannot reference the nonstatic field, method, or property 'Opdracht5.Form1.stort' C:\Documents and Settings\Jeffro\Mijn documenten\Visual Studio 2005\Projects\Opdracht5\Opdracht5\Form1.cs 16 42 Opdracht5
Error 2 A field initializer cannot reference the nonstatic field, method, or property 'Opdracht5.Form1.rente' C:\Documents and Settings\Jeffro\Mijn documenten\Visual Studio 2005\Projects\Opdracht5\Opdracht5\Form1.cs 17 42 Opdracht5
Error 3 A field initializer cannot reference the nonstatic field, method, or property 'Opdracht5.Form1.jaren' C:\Documents and Settings\Jeffro\Mijn documenten\Visual Studio 2005\Projects\Opdracht5\Opdracht5\Form1.cs 18 32 Opdracht5
Error 4 Operator '<' cannot be applied to operands of type 'int' and 'System.Windows.Forms.TextBox' C:\Documents and Settings\Jeffro\Mijn documenten\Visual Studio 2005\Projects\Opdracht5\Opdracht5\Form1.cs 28 20 Opdracht5



And also, not only errors but i want to know if the formula would work!

[MasterOfTheDark]

Jeffro -

Looks like your first errors come from these lines of code:

        double stort2 = Convert.ToDouble(stort.Text);
        double rente2 = Convert.ToDouble(rente.Text);
        int jaren2 = int.Parse(jaren.Text);
 

This is because these are initialized in the first line of the constructor (effectively, before the brackets are even entered) - stort, rente, and jaren aren't even initialized until your InitializeComponent method.

I recommend moving your variable declarations to inside your button click event handler rather than as class-level variables; you probably want to re-load them after each click anyway.

As for this line of code:

            while (teller < jaren)
 

I think you want jaren2.

I'm not sure if the algorithm works -- I can't see your form so I don't know what all the text-boxes are labeled, so I'm not exactly sure what it is you're trying to do.

Hope it helps you get rid of the errors at least.

[Jeffro]

but using double is initializing them right?

or do i have to make a int first and then convert them to double ?

[Jeffro]

Ok i got rid of the errors.

Here is the project: http://jeffro.no-ip.info/Opdracht5.rar

stort = the amount of money I put on my bank each year.
Rente = the rent that your banks gives you each year.
Jaren = the amount of years that i'm going to put money on it.

I dont know if the formula is good so can someone please check it for me. I really want to learn if its right ;)

[kenobewan]

Ok i got rid of the errors.

Here is the project: http://jeffro.no-ip.info/Opdracht5.rar

stort = the amount of money I put on my bank each year.
Rente = the rent that your banks gives you each year.
Jaren = the amount of years that i'm going to put money on it.

I dont know if the formula is good so can someone please check it for me. I really want to learn if its right ;)

Ok I have some troubles with my code. I don't need a full solution. I just want to know what i should do best for this situation.

I dont know about anyone else, but I refuse to test applications - that's what testing servers are for. Suggest the OP learn something about application and project management.

Congratulations MasterOfTheDark for a job well done.

[Jeffro]

You guys can close this as my problems are fixed and my application works now!

Thank you for your support!