C#

public class Form2 : Form
    {
        private System.ComponentModel.IContainer components = null;

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

        private void InitializeComponent()
        {
            this.menuStrip1 = new System.Windows.Forms.MenuStrip();
            this.item1ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.item1ToolStripMenuItem1 = new System.Windows.Forms.ToolStripMenuItem();
            this.item2ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.item3ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.item4ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.subItem1ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.subItem2ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.menuStrip1.SuspendLayout();
            this.SuspendLayout();
            this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.item1ToolStripMenuItem});
            this.menuStrip1.Location = new System.Drawing.Point(0, 0);
            this.menuStrip1.Name = "menuStrip1";
            this.menuStrip1.Size = new System.Drawing.Size(491, 24);
            this.menuStrip1.TabIndex = 0;
            this.menuStrip1.Text = "menuStrip1";
            this.item1ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.item1ToolStripMenuItem1,
            this.item2ToolStripMenuItem,
            this.item3ToolStripMenuItem,
            this.item4ToolStripMenuItem});
            this.item1ToolStripMenuItem.Name = "item1ToolStripMenuItem";
            this.item1ToolStripMenuItem.Size = new System.Drawing.Size(77, 20);
            this.item1ToolStripMenuItem.Text = "MainMenu";
            this.item1ToolStripMenuItem.MouseMove += new System.Windows.Forms.MouseEventHandler(this.item1ToolStripMenuItem_MouseMove);
            this.item1ToolStripMenuItem1.Name = "item1ToolStripMenuItem1";
            this.item1ToolStripMenuItem1.Size = new System.Drawing.Size(152, 22);
            this.item1ToolStripMenuItem1.Text = "Item 1";
            this.item2ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.subItem1ToolStripMenuItem,
            this.subItem2ToolStripMenuItem});
            this.item2ToolStripMenuItem.Name = "item2ToolStripMenuItem";
            this.item2ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.item2ToolStripMenuItem.Text = "Item 2";
            this.item3ToolStripMenuItem.Name = "item3ToolStripMenuItem";
            this.item3ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.item3ToolStripMenuItem.Text = "Item 3";
            this.item4ToolStripMenuItem.Name = "item4ToolStripMenuItem";
            this.item4ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.item4ToolStripMenuItem.Text = "Item 4";
            this.subItem1ToolStripMenuItem.Name = "subItem1ToolStripMenuItem";
            this.subItem1ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.subItem1ToolStripMenuItem.Text = "SubItem1";
            this.subItem2ToolStripMenuItem.Name = "subItem2ToolStripMenuItem";
            this.subItem2ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.subItem2ToolStripMenuItem.Text = "SubItem2";
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(491, 388);
            this.Controls.Add(this.menuStrip1);
            this.MainMenuStrip = this.menuStrip1;
            this.Name = "Form2";
            this.Text = "Form2";
            this.menuStrip1.ResumeLayout(false);
            this.menuStrip1.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();
        }

        private System.Windows.Forms.MenuStrip menuStrip1;
        private System.Windows.Forms.ToolStripMenuItem item1ToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem item1ToolStripMenuItem1;
        private System.Windows.Forms.ToolStripMenuItem item2ToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem subItem1ToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem subItem2ToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem item3ToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem item4ToolStripMenuItem;

        public Form2()
        {
            InitializeComponent();
            SetMenuDetails(item1ToolStripMenuItem);
        }

        private void SetMenuDetails(ToolStripMenuItem menu)
        {
            foreach (ToolStripMenuItem item in menu.DropDownItems)
            {
                UpdateItem(item);
            }
        }

        private void UpdateItem(ToolStripMenuItem item)
        {
            foreach (ToolStripMenuItem subItem in item.DropDownItems)
            {
                UpdateItem(subItem);
            }

            item.MouseMove += new MouseEventHandler(item_MouseUp);
        }

        void item_MouseUp(object sender, MouseEventArgs e)
        {
            ToolStripMenuItem item = (ToolStripMenuItem)sender;
            if (item.DropDownItems.Count > 0)
            {
                ToolStripMenuItem subItem = (ToolStripMenuItem)item.DropDownItems[0];
                item.ShowDropDown();
                Point location = subItem.Bounds.Location;
                Cursor.Position = new Point(Cursor.Position.X + location.X + item.Bounds.Width/2, Cursor.Position.Y + location.Y );
            }
        }

        private void item1ToolStripMenuItem_MouseMove(object sender, MouseEventArgs e)
        {
            this.Text = e.Location.ToString();
        }
    }

void ClickIt(object sender, EventArgs e)

if (sender is MyClass)...

MyClass mine = sender as MyClass

OriginalGriff wrote:

What is he doing

Luc Pattyn wrote:

how about using a virtual method/property?

Luc Pattyn wrote:

PS: if you frequently need dispatching based on type, as in your example, how about using a virtual method/property?

Richard Blythe wrote:

there are certain things that Microsoft doesn't explain clearly

Richard Blythe wrote:

how much storage space a Type object requires

Richard Blythe wrote:

how fast the "is" function is evaluated