Example of Custom event

/**
 @Author: Sajmon
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TestExample
{
    public class MyEventArgs : EventArgs
    {
        private String message;

        public MyEventArgs(String message)
        {
            this.message = message;
        }

        public String GetMessage()
        {
            return this.message;
        }
    }
}



/**
 @Author: Sajmon
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TestExample
{
    public class EventClass
    {
        public delegate void MyEventHandler(Object sender, MyEventArgs e);
        public event MyEventHandler myEvent;

        public EventClass()
        {

        }

        public void InvokeEvent()
        {
            MyEventArgs args = new MyEventArgs("Event report: Walking in the Moon, hh");
            myEvent(this, args);
        }
    }
}



/**
 @Author: Sajmon
*/

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;
using TestExample;

namespace Main
{
    public partial class MainFrame : Form
    {
        public MainFrame()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            EventClass myClass = new EventClass();
            myClass.myEvent += new EventClass.MyEventHandler(this.grap_event);
            myClass.InvokeEvent();

        }

        public void grap_event(Object sender, MyEventArgs e)
        {
            MessageBox.Show(e.GetMessage(), "Custom Event", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
    }
}