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public partial class Form1 : Form

{

ContextMenuStrip MyContextMenuStrip = new ContextMenuStrip();

bool CloseClicked = false;

public Form1()

{

InitializeComponent();

// add close item, name it

MyContextMenuStrip.Items.Add("Close");

// add separator

MyContextMenuStrip.Items.Add("-");

// handle MouseDown to no reshow context menu strip

this.MouseDown += new MouseEventHandler(Form1_MouseDown);

// we will add items here

MyContextMenuStrip.Opening += new CancelEventHandler(cms_Opening);

// we will control closing here

MyContextMenuStrip.Closing += new ToolStripDropDownClosingEventHandler(cms_Closing);

// we will stash a flag on what item is clicked here

MyContextMenuStrip.ItemClicked += new ToolStripItemClickedEventHandler(cms_ItemClicked);

}

void cms_ItemClicked(object sender, ToolStripItemClickedEventArgs e)

{

if (e.ClickedItem.Text == "Close")

{

CloseClicked = true;

}

}

void cms_Opening(object sender, CancelEventArgs e)

{

// The opening event is automatically cancelled if there are no items to display.

// To dynamically populate a dropdown in the Opening event, make sure to set

// e.Cancel = false. In this case, we always have an item.

//

// Add a timestamped item

MyContextMenuStrip.Items.Add(DateTime.Now.ToString());

// reset flag

CloseClicked = false;

}

void cms_Closing(object sender, ToolStripDropDownClosingEventArgs e)

{

e.Cancel = true;

// only close if the close item is chosen

if (e.CloseReason == ToolStripDropDownCloseReason.ItemClicked && CloseClicked)

{

e.Cancel = false;

}

}

private void Form1_MouseDown(object sender, MouseEventArgs e)

{

// show on right click

if (e.Button == MouseButtons.Right)

{

// only if not already showing

if (!MyContextMenuStrip.Visible)

{

// coordinates relative to form

MyContextMenuStrip.Show(this, e.Location);

}

}

}

}