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PONo extension method with windows forms
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copied!<p>The problem is in</p> <pre><code>num1 = Convert.ToDecimal(this.withBox.Text); </code></pre> <p>of <code>bankAccount()</code></p> <p>I am attempting to make it where you can type any decimal into the withBox textbox and when you click the button it will give you the amount in the <code>aMtBox</code>. I am unsure of what I am doing wrong.</p> <p>Is gives me this error, but I do not know why?</p> <p>What I am wanting, is for num1 to equal whatever I type into my withBox. That is my end goal.</p> <pre><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 WindowsFormsApplication2 { public partial class Form1 : Form { BankAccount a = new BankAccount(); public Form1() { InitializeComponent(); decimal iBa = 300.00m; this.aMtBox.Text = iBa.ToString(); } private void dep_Click(object sender, EventArgs e) { try { decimal num1 = 0.00m; decimal iBa = 300.00m; num1 = Convert.ToDecimal(this.depBox.Text); decimal total = num1 + iBa; this.aMtBox.Text = total.ToString(); } catch { MessageBox.Show("ERROR", "Oops, this isn't good!", MessageBoxButtons.OK, MessageBoxIcon.Error); } } public void withdrawl_Click(object sender, EventArgs e) { this.aMtBox.Text = a.Balance.ToString(); } public class BankAccount { decimal balance; decimal iBa; decimal num1; public decimal Balance { get { return balance; } } public decimal IBa { get { return iBa; } } public decimal Num1 { get { return num1; } } public BankAccount() { iBa = 300.00m; num1 = Convert.ToDecimal(this.withBox.Text); balance = iBa - num1; } } private void withBox_TextChanged(object sender, EventArgs e) { } } </code></pre> <p>}</p>

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