学步园

using System;
using System.Windows.Forms;
using System.Reflection;
using System.Runtime.Remoting;
using System.Collections;

namespace myMemonto
{
    /// <summary>
    /// Description of MyShare.
    /// </summary>
    public class MyShare
    {
        public MyShare()
        {
        }
    }
    public class ApartmentType{
        public string TypeCode;
        public string TypeName;
        public ApartmentType(){

        }
    }
    public class Apartment{
        protected string name;
        protected string ap_type;
        public string roomNumber;
        public double area;

        private Form editform;
        public Apartment()
        {
            editform=FlyWightFactory.GetEditForm("myMemonto.EditApartment");
            //editform=new EditApartment();
        }
        protected Apartment myType;

        public string Name{
            get{return name;}
            set{name=value;}
        }

        public string ApartmentType{
            get{return ap_type;}
            set{ap_type=value;}
        }

        public virtual bool Edit(){
            EditApartment f=(EditApartment)editform;
            f.txtName.Text=name;
            f.txtArea.Text=area.ToString();
            f.txtType.Text=ap_type;
            f.txtRoomNumber.Text=roomNumber;

            if(f.ShowDialog()== DialogResult.OK){

                name=f.txtName.Text;
                area=double.Parse(f.txtArea.Text);
                ap_type=f.txtType.Text;
                roomNumber=f.txtRoomNumber.Text;

                MessageBox.Show("saved");
                return true;
            }
            else
            {
                MessageBox.Show("cancelled");
                return false;
            }

        }

        public string RoomNumber{
            get{return roomNumber;}
            set{roomNumber=value;}
        }
        public double Area{
            get{return area;}
            set{area=value;}
        }
        public override string ToString()
        {
            return name;
        }
    }

    public class TestaEditForm
    {
        private Form editform;
        public TestaEditForm(){
            editform=FlyWightFactory.GetEditForm("myMemonto.MyTest");
        }

        public bool Edit()
        {
            MyTest a=(myMemonto.MyTest)editform;
            if(a.ShowDialog()== DialogResult.OK)
            {
                MessageBox.Show("Saved");
                return true;
            }
            else
            {
                MessageBox.Show("canceled");
                return false;
            }
        }
        public Form EditForm{
            get{return editform;}
            set{editform=value;}
        }

    }

    public class TypeFacotry{
        public TypeFacotry(){}
        private static ArrayList types=new ArrayList();

        public static ApartmentType GetApartmentType(string typecode){
            foreach(ApartmentType at in types){
                if(at.TypeCode==typecode) return at;
            }

            ApartmentType nat=new ApartmentType();
            nat.TypeCode=typecode;
            nat.TypeCode=typecode;

            types.Add(nat);
            return nat;
        }
    }

    public class FlyWightFactory{
        private static ArrayList editforms=new ArrayList();

        private FlyWightFactory(){}

        public static Form GetEditForm(string formType)
        {
            Form editform;
            foreach(Form ef in editforms)
                if(ef.GetType().Name==formType) return ef;

            ObjectHandle obj=Activator.CreateInstance(null,formType);
            editform=(Form)obj.Unwrap();

            editforms.Add(editform);

            return editform;
        }
    }

}

void Button2Click(object sender, EventArgs e)
{
    Apartment a=(Apartment) this.listBox1.SelectedItem;
    if(a!=null) a.Edit();
}

void Button4Click(object sender, EventArgs e)
{
    TestaEditForm b=new TestaEditForm();
    if(b.Edit()) this.listBox1.Items.Add(b);
}