Menustrip控件是一个菜单栏控件，可以加载菜单栏，在很多系统中都有用到。本文介绍下该控件的一些属性的常用方式。
在页面FormMain_Load里面添加如下注册事件：
for (int i = 0; i < this.toolStrip1.Items.Count; i++) {
this.toolStrip1.Items[i].MouseHover += new EventHandler(toolStrip1_MouseHover);
}
添加方法：
private void toolStrip1_MouseHover(object sender, EventArgs e) {
if (sender is ToolStripDropDownItem) {
ToolStripDropDownItem item = sender as ToolStripDropDownItem;
if (item.HasDropDownItems && !item.DropDown.Visible) {
item.ShowDropDown();
}
}
}
扩展：下面在分享一段示例代码：menuStrip鼠标经过自动显示菜单
//---------------------------------------------------------------------------------
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();
}
}
}
