loading the array

[Karrill29]

when i hit the calculate button the number entered into the text box is calculate and then stored in an array (the array has five spaces allotted for the information )
after you have your five entries into the array you hit exit and it spits out in a message box the contence of the Array .(this should be all five calculated totals in the array)
what i am experiencing when i hit exit it displays the last total for all of the array no matter the other numbers entered
here is my code :

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace InvoiceTotal
{
    // This is the starting point for exercise 8-1 from
    // "Murach's C# 2010" by Joel Murach
    // (c) 2010 by Mike Murach & Associates, Inc. 
    // www.murach.com

    public partial class frmInvoiceTotal : Form
	{
        
        
        
        
		public frmInvoiceTotal()
		{
			InitializeComponent();
            invoiceTotals[0] = 0.0m;
            invoiceTotals[1] = 0.0m;
            invoiceTotals[2] = 0.0m;
            invoiceTotals[3] = 0.0m;
            invoiceTotals[4] = 0.0m;
		}

        // TODO: declare class variables for array and list here
            decimal[] invoiceTotals = new decimal [5];
       
            
                        
        
        

        private void btnCalculate_Click(object sender, EventArgs e)
		{ 
            try
            {

                if (txtSubtotal.Text == "")
                {
                    MessageBox.Show(
                        "Subtotal is a required field.", "Entry Error");
                }
                else
                {
                    decimal subtotal = Decimal.Parse(txtSubtotal.Text);
                    if (subtotal > 0 && subtotal < 10000)
                    {
                        decimal discountPercent = 0m;
                        if (subtotal >= 500)
                            discountPercent = .2m;
                        else if (subtotal >= 250 & subtotal < 500)
                            discountPercent = .15m;
                        else if (subtotal >= 100 & subtotal < 250)
                            discountPercent = .1m;
                        decimal discountAmount = subtotal * discountPercent;
                        decimal invoiceTotal = subtotal - discountAmount;

                        discountAmount = Math.Round(discountAmount, 2);
                        invoiceTotal = Math.Round(invoiceTotal, 2);

                        txtDiscountPercent.Text = discountPercent.ToString("p1");
                        txtDiscountAmount.Text = discountAmount.ToString("c");
                        txtTotal.Text = invoiceTotal.ToString("c");

                     
                        // TODO:  Add invoice total to the array here

                       for (int i = 0; i < invoiceTotals.Length; i++)
                        {
                        invoiceTotals[i] = invoiceTotal;
                       
                         }
                        
                        
                    }
                    else
                    {
                        MessageBox.Show(
                            "Subtotal must be greater than 0 and less than 10,000.",
                            "Entry Error");
                    }
                }
            }
            catch (FormatException)
            {
                MessageBox.Show(
                    "Please enter a valid number for the Subtotal field.",
                    "Entry Error");
            }
            txtSubtotal.Focus();
        }

		private void btnExit_Click(object sender, EventArgs e)
		{
            // TODO: add code that displays dialog boxes here
    
            string currentTotals = "";
            for (int i = 0; i < invoiceTotals.Length; i++)
                currentTotals += invoiceTotals[i].ToString("c") + "\n";
            MessageBox.Show(currentTotals, "Order Totals");

          
                this.Close();
		}

        private void frmInvoiceTotal_Load(object sender, EventArgs e)
        {

        }

	}
}

[iace]

You are trying to concatenate a string value, in the below code that you have written.

string currentTotals = "";

If you really want to display the total. Try parsing it, or else instead of using string use decimal.

[Rabbit]

The problem is line 78. You assign the same value to every element in your array.