atmform.cs

是一个模拟ATM的程序

// ATM.cs created with MonoDevelop
// User: Estelle at 1:51 PM 5/5/2008
//
// To change standard headers go to Edit->Preferences->Coding->Standard Headers
//

using System;
using System.Reflection;
using System.Collections;
using System.Windows.Forms;
using System.Drawing;

namespace ATM{
	public class ATMForm:Form{
		/** 
		 * This group of constants is used to naming each page.
		 * By the way, In this application, a page means a form which appearances in the ATMForm 
		 * that should be showed in the separated form. Put another way, The ATMForm is consists of
		 * a lot of single form, and they are distincted by the PAGE.
		 */
		public const string MENU_PAGE="Menu";
		public const string OPERATION_PAGE="Operation";
		public const string REGISTER_PAGE="Register";
		public const string LOGIN_PAGE="Login";
		public const string DEPOSIT_PAGE="Deposit";
		public const string DRAW_PAGE="Draw";
		public const string QUERY_PAGE="Query_The_Balance";
		public const string MODIFY_PASSWORD_PAGE="Modify_The_Password";
		
		/**
		 * This group of constants is used to constrainting the length of the special TextBox. 
		 */
		public const int MAX_NAME_LENGTH=16;
		public const int MAX_MONEY_AVAIBLE_LENGTH=4;
		public const int PASSWORD_LENGTH=6;
		public const int IC_NUMBER_LENGTH=18;
		public const int CARD_NUMBER_LENGTH=19;
		
		/**
		 * This stands for all the banks this system support.
		 */
		public static Bank [] Banks=new Bank[]{
			new CCB(),
			new ICBC()
		};
			
		/**
		 * Record the current customer.
		 */
		public Customer customer=null;
		
		/**
		 * The menus is used to keeping the order of pages which has been viewed for returning.
		 * The layouts store the collections of Layout to layout the controls for each page.
		 */
		private Stack menus;
		private String curpage;
		private Hashtable pages;
		private Hashtable layouts;
		
		private Button register;
		private Button login;
		private Button exitATM;
		private Button deposit;
		private Button draw;
		private Button queryBalance;
		private Button modifyPassword;
		
		private Label lblType;
		private ComboBox types;
		private Label lblID;
		private TextBox ID;
		private Label lblName;
		private TextBox name;
		private Label lblPassword;
		private TextBox password;
		private Label lblRepwd;
		private TextBox repwd;
		private Button submit;
		private Button cancel;
		
		private Label lblCardNo;
		private TextBox cardNo;
		private Button authenticat;
		
		private Label lblAmount;
		private TextBox amount;
		private Button confirm;
		
		private Label balance;
		
		private Label lblOldPWD;
		private TextBox oldPWD;
		
		/**
		 * This is a method to show a form in this instance.
		 * Every page except some special pages such as LOGIN and REGISTER will be
		 * recorded to the Stack.
		 * 
		 * The page stands for pagename which value equals one of the _PAGE constants.
		 */
		public void showPage(string page){
			try{
				if ((this.menus.Count>0)&&(this.menus.Peek().Equals(page)))return;
				this.curpage=page;
				if (page.Equals(ATMForm.MENU_PAGE))
					this.menus.Clear();
				if ((!page.Equals(ATMForm.LOGIN_PAGE))&&(!page.Equals(ATMForm.REGISTER_PAGE)))
					this.menus.Push(page);
				this.Controls.Clear();
				ArrayList comps=(ArrayList)pages[page];
				foreach (Object comp in comps){
					try{
						((TextBox)comp).Text="";
					}catch(Exception e){
						Console.Error.WriteLine(e.Message);
					}
					this.Controls.Add((Control)comp);
				}
				TableLayout ly=(TableLayout)layouts[page];
				ly.layout();
			}catch(NullReferenceException nre){
				Console.Error.WriteLine(nre);
			}
		}
		
		/**
		 * Show the last page which has been viewed and pop it.
		 */
		public void returnPage(){
			try{
				this.menus.Pop();
				this.showPage((string)this.menus.Pop());
			}catch(Exception e){
				Console.Error.WriteLine(e.Message);
				this.showPage(ATMForm.MENU_PAGE);
			}
		}
		
		/**
		 * Get all the useful controls in the current page.
		 */
		public ArrayList getControls(string page){
			return (ArrayList)pages[page];
		}
		
		/**
		 * Get the current page name.
		 */ 
		public string getCurrentPage(){
			return this.curpage; 
		}
		
		/**
		 * if there is a loginned customers, this method will update the balance Label.
		 */
		public void updateBalance(){
			if (this.customer==null)return ;
			CustomerBalance cb=new CustomerBalance();
			cb.IDNo=this.customer.IDNo;
			cb=(CustomerBalance)cb.getEntityByID();
			this.balance.Text="The Balance is: "+cb.balance.ToString();
		}
			
		protected override void OnLoad(EventArgs er){
			this.Text="ATM";
			Size size=new Size(400,300);
			this.MinimumSize=this.MaximumSize=size;
			Rectangle rect=Screen.PrimaryScreen.WorkingArea;
			this.Location=new Point((rect.Width-this.Width)/2,(rect.Height-this.Height)/2);
			
			this.register=this.createButton(ATMForm.REGISTER_PAGE,"GotoPage");
			this.login=this.createButton(ATMForm.LOGIN_PAGE,"GotoPage");
			this.exitATM=this.createButton("Exit The ATM","ExitATM");		
			this.deposit=this.createButton(ATMForm.DEPOSIT_PAGE,"GotoPage");
			this.draw=this.createButton(ATMForm.DRAW_PAGE,"GotoPage");
			this.queryBalance=this.createButton(ATMForm.QUERY_PAGE,"GotoPage");
			this.modifyPassword=this.createButton(ATMForm.MODIFY_PASSWORD_PAGE,"GotoPage");
			
			this.lblType=this.createLabel("Card Type");
			this.types=this.createComboBox("type",ATMForm.Banks);
			this.lblID=this.createLabel("Identity Card");
			this.ID=this.createTextBox("Identity Card",ATMForm.IC_NUMBER_LENGTH,false);
			this.lblName=this.createLabel("Real Name");
			this.name=this.createTextBox("Real Name",ATMForm.MAX_NAME_LENGTH,false);
			this.lblPassword=this.createLabel("New Password");
			this.password=this.createTextBox("Password",ATMForm.PASSWORD_LENGTH,true);
			this.lblRepwd=this.createLabel("Confirm PWD");
			this.repwd=this.createTextBox("Confirm PWD",ATMForm.PASSWORD_LENGTH,true);
			this.submit=this.createButton("Submit","Submit");
			this.cancel=this.createButton("Cancel","Cancel");
			
			this.lblCardNo=this.createLabel("Card Number");
			this.cardNo=this.createTextBox("Card Number",ATMForm.CARD_NUMBER_LENGTH,false);
			this.authenticat=this.createButton("Login","Login");
			
			this.lblAmount=this.createLabel("Amount");
			this.amount=this.createTextBox("Amount",ATMForm.MAX_MONEY_AVAIBLE_LENGTH,false);
			this.confirm=this.createButton("Confirm","Confirm");
			
			this.balance=this.createLabel("The Balance is: (waiting...)");
			
			this.lblOldPWD=this.createLabel("Login Password");
			this.oldPWD=this.createTextBox("OldPassword",ATMForm.PASSWORD_LENGTH,true);
			
			this.pages=new Hashtable();
			this.layouts=new Hashtable();
			this.menus=new Stack();
			
			this.assignComponents();
			
			this.showPage(ATMForm.MENU_PAGE);
		}
		
		/**
		 * Divide all the compoents into the correct page and bind a layout per page.
		 */
		private void assignComponents(){
			ArrayList page;
			TableLayout tly;
			TableLayout.CellConstraint tlcc;
			
			//Menu Page
			page=new ArrayList();
			tly=new TableLayout(this,6,5);
			tlcc=new TableLayout.CellConstraint(1,1);
			tlcc.size=new Size(4,1);
			tlcc.space=new TableLayout.Space(3,3,3,3);
			tly.addCellConstraint(tlcc);
			page.Add(this.register);
			tlcc=(TableLayout.CellConstraint)tlcc.Clone();
			tlcc.location=new Point(1,2);
			tly.addCellConstraint(tlcc);
			page.Add(this.login);
			tlcc=(TableLayout.CellConstraint)tlcc.Clone();
			tlcc.location=new Point(1,3);
			tly.addCellConstraint(tlcc);
			page.Add(this.exitATM);
			pages.Add(ATMForm.MENU_PAGE,page);
			layouts.Add(ATMForm.MENU_PAGE,tly);
			
			//Operation Page
			page=new ArrayList();
			tly=new TableLayout(this,6,7);
			tlcc=(TableLayout.CellConstraint)tlcc.Clone();
			tlcc.location=new Point(1,1);
			tly.addCellConstraint(tlcc);
			page.Add(this.deposit);
			tlcc=(TableLayout.CellConstraint)tlcc.Clone();
			tlcc.location=new Point(1,2);
			tly.addCellConstraint(tlcc);
			page.Add(this.draw);
			tlcc=(TableLayout.CellConstraint)tlcc.Clone();
			tlcc.location=new Point(1,3);
			tly.addCellConstraint(tlcc);
			page.Add(this.queryBalance);
			tlcc=(TableLayout.CellConstraint)tlcc.Clone();
			tlcc.location=new Point(1,4);
			tly.addCellConstraint(tlcc);
			page.Add(this.modifyPassword);
			tlcc=(TableLayout.CellConstraint)tlcc.Clone();
			tlcc.location=new Point(1,5);
			tly.addCellConstraint(tlcc);
			page.Add(this.cancel);
			pages.Add(ATMForm.OPERATION_PAGE,page);
			layouts.Add(ATMForm.OPERATION_PAGE,tly);
			
			//Register Page
			page=new ArrayList();
			tly=new TableLayout(this,10,8);
			tlcc=(TableLayout.CellConstraint)tlcc.Clone();
			tlcc.location=new Point(1,1);