Would it be possible to use the Validating event rather than the Leave event, and set exitButton.CausesValidation = false?

>I am trying to figure out how to un-paint myself from a corner where I thought I did some good coding. Admittedly, I am a beginner at coding in C#, although I made a somewhat dubious attempt in 2003 to learn this language. This time around, it doesn't seem so foreign to me any more, however,... I still get stuck from time to time (all the time)...
>
>I am trying to exit without the basePriceTextBox's LEAVE event's code executing (it is number one in TAB order). If the cursor is on that textbox and I want to EXIT, that event is going to fire.
>
>

>using System;
>using System.Collections.Generic;
>using System.ComponentModel;
>using System.Data;
>using System.Drawing;
>using System.Text;
>using System.Windows.Forms;
>
>namespace CarCareCenter
>{
>    public partial class CarCareForm : Form
>    {
>        private const decimal
>            decStereoSystem = 425.76M,
>            decLeatherInterior = 987.41M,
>            decComputerNavigation = 1741.23M,
>            decStandardFinish = 0M,
>            decPearlizeFinish = 345.72M,
>            decCustomizedDetailing = 599.99M,
>            decTaxRate = 0.08M;
>
>        private decimal decTradeInAllowance = 0, decSubTotal = 0,
>            decSalesTax = 0, decAmountDue = 0, decAccessoriesTotal = 0;
>
>        public CarCareForm()
>        {
>            InitializeComponent();
>        }
>
>        private void CarCareForm_Load(object sender, EventArgs e)
>        {
>
>        }
>
>        private void exitButton_Click(object sender, EventArgs e)
>        {
>            this.Close();
>        }
>
>        private void clearButton_Click(object sender, EventArgs e)
>        {
>            this.accessoriesLabel.Text = "";
>            this.salesTaxLabel.Text = "";
>            this.basePriceTextBox.Text = "";
>            this.tradeInAllowanceTextBox.Text = "";
>            this.stereoCheckBox.Checked = false;
>            this.leatherInteriorCheckBox.Checked = false;
>            this.computerNavigationCheckBox.Checked = false;
>            this.subTotalLabel.Text = "";
>            this.amountDueLabel.Text = "";
>            //Clear variables.
>            decSubTotal = 0;
>            decAccessoriesTotal = 0;
>            decAmountDue = 0;
>            decSalesTax = 0;
>            decTradeInAllowance = 0;
>            disableControls();
>            //Put the focus on the first text box.
>            this.basePriceTextBox.Focus();
>        }
>
>        private void calculateButton_Click(object sender, EventArgs e)
>        {
>            string strMessageString="";
>
>            //Calculate the cost of the vehicle.
>            if (this.basePriceTextBox.Text != "")
>            {
>                //Convert from Text to Decimal value.
>                decSubTotal = decimal.Parse(this.basePriceTextBox.Text);
>                // Types of Interiors using check boxes. See which ones were checked.
>                if (this.stereoCheckBox.Checked)
>                {
>                    decAccessoriesTotal += decStereoSystem;
>                }
>                if (this.leatherInteriorCheckBox.Checked)
>                {
>                    decAccessoriesTotal += decLeatherInterior;
>                }
>                if (this.computerNavigationCheckBox.Checked)
>                {
>                    decAccessoriesTotal += decComputerNavigation;
>                }
>                decSubTotal += decAccessoriesTotal;
>
>                //Types of Finishes. See which Radio Button is checked.
>                if (this.standardFinishRadioButton.Checked)
>                {
>                    decSubTotal += decStandardFinish;
>                }
>                else if (this.pearlizedFinishRadioButton.Checked)
>                {
>                    decSubTotal += decPearlizeFinish;
>                }
>                else if (this.customizedDetailingRadioButton.Checked)
>                {
>                    decSubTotal += decCustomizedDetailing;
>                }
>                // Determine the taxes prior to deducting the trade-in value.
>                decSalesTax = (decSubTotal * decTaxRate);
>                //Add the sales tax to the subTotal variable.
>                decSubTotal += decSalesTax;
>
>                //See if the Buyer has a trade-in. Enter the value.
>                if (this.tradeInAllowanceTextBox.Text != "")
>                {
>                    decTradeInAllowance =
>                        decimal.Parse(this.tradeInAllowanceTextBox.Text);
>                    decAmountDue = (decSubTotal - decTradeInAllowance);
>                }
>                //In the case that there is no value in the Trade-In Allowance textbox.
>                else
>                {
>                    decAmountDue += decSubTotal;
>                }
>
>                //Now, display the results in the Labels.
>                this.accessoriesLabel.Text = decAccessoriesTotal.ToString("C");
>                this.salesTaxLabel.Text = decSalesTax.ToString("C");
>                this.subTotalLabel.Text = decSubTotal.ToString("C");
>                this.amountDueLabel.Text = decAmountDue.ToString("C");
>                this.calculateButton.Enabled = false;
>            }
>        }
>
>        private void basePriceTextBox_Leave(object sender, EventArgs e)
>        {
>            string strMessageForBasePrice="";
>            try
>            {
>                if (decimal.Parse(this.basePriceTextBox.Text) >= 1)
>                {
>                    enableControls();
>                    this.tradeInAllowanceTextBox.Focus();
>                }
>                if (decimal.Parse(this.basePriceTextBox.Text) < 1)
>                {
>                    disableControls();
>                }
>            }
>            catch (FormatException err)
>            {
>                strMessageForBasePrice =
>                    "Non-numeric value was entered for Base Price";
>                MessageBox.Show(strMessageForBasePrice + ". " + err.Message,
>                    "Data Entry Error",
>                    MessageBoxButtons.OK, MessageBoxIcon.Information);
>            }
>        }
>        //Rather than repeat the below code several times, I decided to create a method.
>        private void disableControls()
>        {
>            this.stereoCheckBox.Enabled = false;
>            this.leatherInteriorCheckBox.Enabled = false;
>            this.computerNavigationCheckBox.Enabled = false;
>            this.standardFinishRadioButton.Enabled = false;
>            this.pearlizedFinishRadioButton.Enabled = false;
>            this.customizedDetailingRadioButton.Enabled = false;
>            this.tradeInAllowanceTextBox.Enabled = false;
>            this.calculateButton.Enabled = false;
>        }
>
>        private void enableControls()
>        {
>            this.stereoCheckBox.Enabled = true;
>            this.leatherInteriorCheckBox.Enabled = true;
>            this.computerNavigationCheckBox.Enabled = true;
>            this.standardFinishRadioButton.Enabled = true;
>            this.pearlizedFinishRadioButton.Enabled = true;
>            this.customizedDetailingRadioButton.Enabled = true;
>            this.tradeInAllowanceTextBox.Enabled = true;
>            this.calculateButton.Enabled = true;
>        }
>    }
>}
>