C#

public static void Main()
{
    Stock stock1 = new Stock();
    stock1.OnAlert += AlertOccured;  // Subscribing event.
    stock1.Alert(); // This will call <code>Alert()</code> method which will trigger <code>OnAlert </code>event.
}

private void AlertOccured(object source, StockArgs a)
{
    // your code.
}

public delegate void ADelegate();
class Foo
{
    public ADelegate ADelegateInstance;

    public void FireADelegate()
    {
        if (ADelegateInstance != null)
            ADelegateInstance();
    }
}

class Program
{
    static void AMethod()
    {
        Console.WriteLine("AMethod()");
    }

    static void Main(string[] args)
    {
        Foo f = new Foo();
        f.ADelegateInstance += AMethod;
        f.ADelegateInstance();   // This is valid and calls AMethod
    }
}

public class Stock {
     
     public event EventHandler<StockArgs> OnAlert;
     public event EventHandler<StockArgs> OnVolumeAlert;

     public void Alert()
     {
         if ( OnAlert != null )
           OnAlert( this, new StockArgs("ORCL", "14.50", 100000) );
     }
}

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

public class FormMain : Form
{
    private IContainer components = null;
    private ContextMenuStrip contextMenuStrip;
    private ToolStripSeparator toolStripSeparator;

    public FormMain()
    {
        InitializeComponent();
    }

    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    private void InitializeComponent()
    {
        components = new Container();
        contextMenuStrip = new ContextMenuStrip(components);
        toolStripSeparator = new ToolStripSeparator();

        contextMenuStrip.SuspendLayout();
        SuspendLayout();

        // contextMenuStrip
        contextMenuStrip.Items.AddRange(new ToolStripItem[] {
            toolStripSeparator});

        // FormMain
        AutoScaleDimensions = new SizeF(6F, 13F);
        AutoScaleMode = AutoScaleMode.Font;
        ClientSize = new Size(284, 262);
        ContextMenuStrip = contextMenuStrip;
        Text = "Form Main";

        contextMenuStrip.ResumeLayout(false);
        ResumeLayout(false);
    }
}

bassam eshteba wrote:

i can't improve itthats my problem

SimpleData wrote:

Actually this question can fit every category; how can I get the location of application data folder (which I can read/write without elevation)?