Firing event when object instance created (فراخوانی رویدادی بعد از ایجاد یک Instance از کلاس
سلام دوستان ..در کد زیر ما بلافاصله بعد از نمونه ساختن از کلاسمون ..یک رویداد رو فراخوانی میکنیم..در کد زیر از event و delegate و Lambda Expression استفاده کردم
namespace byMirHassanMoosavi /*This ProblemSet is very Easy!!*/
{
#region UsingScope
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
#endregion
#region ProblemSet
namespace evtFiring
{
#region SolutionScope
public delegate void OnCreateEvent(); //delegate declaration
[Serializable()]
public class Person
{
public static event OnCreateEvent CreateEvent; //static event declaration (delegate in use!)
#region Props & Field
public string Name { get; set; }
public string Family { get; set; }
public string SerializableStatus = string.Empty;
#endregion
#region Constructor
public Person() //default Constructor & event firing place
{
this.Name = "unknown-name!";
this.Family = "unknown-family!";
//Using Lambda Expression for declare an anonymous method
Person.CreateEvent += new OnCreateEvent(() =>
{
#region ChangeConsoleTheme
Console.BackgroundColor = ConsoleColor.DarkGreen;
Console.Clear();
Console.ForegroundColor = ConsoleColor.Green;
#endregion
if (this.GetType().IsSerializable == true)
this.SerializableStatus = "is";
else SerializableStatus = "is not";
Console.WriteLine(
"\r\nThe Instance of Person Class Created in - {0} - with \r\nFollowing Information|>\r\n\r\n\t|> Name: {1}\t\r\n\t|> Family: {2}\t\r\n\r\n\t|> {1} {2} HashCode Is: {3}\t\r\n\t|> {1} {2} Type Is: {4}\t\r\n\t\r\n\t|> {1} {2} {5} Serializable.\r\n",
DateTime.Now.ToString(),
this.Name, this.Family,
this.GetHashCode().ToString(), this.GetType().Name, SerializableStatus);
});
//First Check then fire!!
if (CreateEvent != null)
{
CreateEvent();
}
}
public Person(string name, string family)//Main Constructor
{
this.Name = name;
this.Family = family;
//Using Lambda Expression for declare an anonymous method
Person.CreateEvent += new OnCreateEvent(() =>
{
#region ChangeConsoleTheme
Console.BackgroundColor = ConsoleColor.DarkGreen;
Console.Clear();
Console.ForegroundColor = ConsoleColor.Green;
#endregion
if (this.GetType().IsSerializable == true)
this.SerializableStatus = "is";
else SerializableStatus = "is not";
Console.WriteLine(
"\r\nThe Instance of Person Class Created in - {0} - with \r\nFollowing Information|>\r\n\r\n\t|> Name: {1}\t\r\n\t|> Family: {2}\t\r\n\r\n\t|> {1} {2} HashCode Is: {3}\t\r\n\t|> {1} {2} Type Is: {4}\t\r\n\t\r\n\t|> {1} {2} {5} Serializable.\r\n",
DateTime.Now.ToString(),
this.Name, this.Family,
this.GetHashCode().ToString(), this.GetType().Name, SerializableStatus);
});
//First Check then fire!!
if (CreateEvent != null)
{
CreateEvent();
}
}
#endregion
}
#endregion
#region Using'Solution'
class Program
{
static void Main(string[] args)
{
Person p = new Person("MirHassan", "Moosavi");
Console.WriteLine("------------------------------------------------------------------------");
//Person p2 = new Person();
Console.ReadKey();
}
}
#endregion
}
#endregion
}
کد برنامه :
پاسخ با نقل قول
