设在Menustrip上File菜单是fileToolStripMenuItem,则将File下的菜单加到contextMenuStrip上,且相同菜单项公用处理函数。
this.pictureBox1.ContextMenu = this.contextMenuStrip1;
ToolStripItemCollection c = this.fileToolStripMenuItem.DropDownItems;
ToolStripItem[] items = new ToolStripItem[c.Count];
for (int i = 0; i < c.Count; i++)
{
items

= c

;
}
this.contextMenuStrip1.Items.AddRange(items);