//---------------------------------------------------------------------------------private void Form1_Load(object sender, EventArgs e){    this.menuStrip1.Items[0].MouseHover += new EventHandler(Form1_MouseHover);}//---------------------------------------------------------------------------------void Form1_MouseHover(object sender, EventArgs e){    if (sender is ToolStripDropDownItem)    {        ToolStripDropDownItem item = sender as ToolStripDropDownItem;        if (item.HasDropDownItems && !item.DropDown.Visible)        {            item.ShowDropDown();        }    }}