form1.cs

OOP With Microsoft VB.NET And Csharp Step By Step

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace TheBank
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.ComboBox account;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.ComboBox action;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.ComboBox amount;
		private System.Windows.Forms.Button submit;

		
		
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		private CheckingAccount checking = new CheckingAccount("Your Name");
		private System.Windows.Forms.Button addInterest;
		private SavingsAccount savings = new SavingsAccount("Your Name");

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.label1 = new System.Windows.Forms.Label();
			this.account = new System.Windows.Forms.ComboBox();
			this.label2 = new System.Windows.Forms.Label();
			this.action = new System.Windows.Forms.ComboBox();
			this.label3 = new System.Windows.Forms.Label();
			this.amount = new System.Windows.Forms.ComboBox();
			this.submit = new System.Windows.Forms.Button();
			this.addInterest = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 24);
			this.label1.Name = "label1";
			this.label1.TabIndex = 0;
			this.label1.Text = "Account";
			// 
			// account
			// 
			this.account.DropDownWidth = 248;
			this.account.Location = new System.Drawing.Point(128, 24);
			this.account.Name = "account";
			this.account.Size = new System.Drawing.Size(248, 21);
			this.account.TabIndex = 1;
			this.account.SelectedIndexChanged += new System.EventHandler(this.account_SelectedIndexChanged);
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(16, 72);
			this.label2.Name = "label2";
			this.label2.TabIndex = 0;
			this.label2.Text = "Action";
			// 
			// action
			// 
			this.action.DropDownWidth = 248;
			this.action.Items.AddRange(new object[] {
														"Deposit",
														"Withdraw"});
			this.action.Location = new System.Drawing.Point(128, 72);
			this.action.Name = "action";
			this.action.Size = new System.Drawing.Size(248, 21);
			this.action.TabIndex = 1;
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(16, 120);
			this.label3.Name = "label3";
			this.label3.TabIndex = 0;
			this.label3.Text = "Amount";
			// 
			// amount
			// 
			this.amount.DropDownWidth = 248;
			this.amount.Location = new System.Drawing.Point(128, 120);
			this.amount.Name = "amount";
			this.amount.Size = new System.Drawing.Size(248, 21);
			this.amount.TabIndex = 1;
			// 
			// submit
			// 
			this.submit.Location = new System.Drawing.Point(16, 176);
			this.submit.Name = "submit";
			this.submit.TabIndex = 2;
			this.submit.Text = "Submit";
			this.submit.Click += new System.EventHandler(this.submit_Click);
			// 
			// addInterest
			// 
			this.addInterest.Location = new System.Drawing.Point(128, 176);
			this.addInterest.Name = "addInterest";
			this.addInterest.TabIndex = 3;
			this.addInterest.Text = "Add interest";
			this.addInterest.Visible = false;
			this.addInterest.Click += new System.EventHandler(this.addInterest_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(392, 222);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.addInterest,
																		  this.submit,
																		  this.label3,
																		  this.amount,
																		  this.label2,
																		  this.action,
																		  this.account,
																		  this.label1});
			this.Name = "Form1";
			this.Text = "The Bank";
			this.Load += new System.EventHandler(this.Form1_Load);
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			this.account.Items.Add(checking);
			this.account.Items.Add(savings);
			this.account.SelectedIndex = 0;
			this.action.SelectedIndex = 0;
			this.amount.Text = "100";
		}

		private void submit_Click(object sender, System.EventArgs e)
		{
			BankAccount selectedAccount;
			object item =this.account.SelectedItem;
			selectedAccount =(BankAccount)item;
			switch (action.Text){
				case "Deposit" :
					selectedAccount.Deposit(decimal.Parse(amount.Text));
				break;
				case "Withdraw" :
					selectedAccount.Withdraw(decimal.Parse(amount.Text));
				break;
			}
			MessageBox.Show(String.Format("{0}:{1:C}",
				selectedAccount.ID,selectedAccount.Balance));
		}

		private void account_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			if (account.SelectedItem is SavingsAccount)
			{
				addInterest.Visible = true;
			}
			else 
			{
				addInterest.Visible = false;
			}
		}

		private void addInterest_Click(object sender, System.EventArgs e)
		{
			SavingsAccount theSavings = account.SelectedItem as SavingsAccount;
			if (theSavings != null){
				theSavings.AddInterest();
				MessageBox.Show(String.Format("{0}:{1:C}", theSavings.ID,
					theSavings.Balance));
			}
		}
	}
}