C#如何实现动态添加右键菜单

这个貌似不难，右键菜单用代码生成就行了。
你是要用ContextMenuStrip控件，生成的菜单可以用代码控制。如
// This code example demonstrates how to handle the Opening event.
// It also demonstrates dynamic item addition and dynamic
// SourceControl determination with reuse.
class Form3 : Form
{
// Declare the ContextMenuStrip control.
private ContextMenuStrip fruitContextMenuStrip;

public Form3()
{
// Create a new ContextMenuStrip control.
fruitContextMenuStrip = new ContextMenuStrip();

// Attach an event handler for the
// ContextMenuStrip control's Opening event.
fruitContextMenuStrip.Opening += new System.ComponentModel.CancelEventHandler(cms_Opening);

// Create a new ToolStrip control.
ToolStrip ts = new ToolStrip();

// Create a ToolStripDropDownButton control and add it
// to the ToolStrip control's Items collections.
ToolStripDropDownButton fruitToolStripDropDownButton = new ToolStripDropDownButton("Fruit", null, null, "Fruit");
ts.Items.Add(fruitToolStripDropDownButton);

// Dock the ToolStrip control to the top of the form.
ts.Dock = DockStyle.Top;

// Assign the ContextMenuStrip control as the
// ToolStripDropDownButton control's DropDown menu.
fruitToolStripDropDownButton.DropDown = fruitContextMenuStrip;

// Create a new MenuStrip control and add a ToolStripMenuItem.
MenuStrip ms = new MenuStrip();
ToolStripMenuItem fruitToolStripMenuItem = new ToolStripMenuItem("Fruit", null, null, "Fruit");
ms.Items.Add(fruitToolStripMenuItem);

// Dock the MenuStrip control to the top of the form.
ms.Dock = DockStyle.Top;

// Assign the MenuStrip control as the
// ToolStripMenuItem's DropDown menu.
fruitToolStripMenuItem.DropDown = fruitContextMenuStrip;

// Assign the ContextMenuStrip to the form's
// ContextMenuStrip property.
this.ContextMenuStrip = fruitContextMenuStrip;

// Add the ToolStrip control to the Controls collection.
this.Controls.Add(ts);

//Add a button to the form and assign its ContextMenuStrip.
Button b = new Button();
b.Location = new System.Drawing.Point(60, 60);
this.Controls.Add(b);
b.ContextMenuStrip = fruitContextMenuStrip;

// Add the MenuStrip control last.
// This is important for correct placement in the z-order.
this.Controls.Add(ms);
}

// This event handler is invoked when the ContextMenuStrip
// control's Opening event is raised. It demonstrates
// dynamic item addition and dynamic SourceControl
// determination with reuse.
void cms_Opening(object sender, System.ComponentModel.CancelEventArgs e)
{
// Acquire references to the owning control and item.
Control c = fruitContextMenuStrip.SourceControl as Control;
ToolStripDropDownItem tsi = fruitContextMenuStrip.OwnerItem as ToolStripDropDownItem;

// Clear the ContextMenuStrip control's Items collection.
fruitContextMenuStrip.Items.Clear();

// Check the source control first.
if (c != null)
{
// Add custom item (Form)
fruitContextMenuStrip.Items.Add("Source: " + c.GetType().ToString());
}
else if (tsi != null)
{
// Add custom item (ToolStripDropDownButton or ToolStripMenuItem)
fruitContextMenuStrip.Items.Add("Source: " + tsi.GetType().ToString());
}

// Populate the ContextMenuStrip control with its default items.
fruitContextMenuStrip.Items.Add("-");
fruitContextMenuStrip.Items.Add("Apples");
fruitContextMenuStrip.Items.Add("Oranges");
fruitContextMenuStrip.Items.Add("Pears");

// Set Cancel to false.
// It is optimized to true based on empty entry.
e.Cancel = false;
}
}