asp.net中利用PlaceHolder控件来设计页面中的菜单源码

.NET中菜单控件可以直接使用，但是不能够根据代码或者根据要求进行显示和隐藏，使用树形式又无法实现单机软件中那种菜单的感觉，现在利用 asp.net中PlaceHolder控件来设计页面中的菜单，并提供源码，希望对大家能够有所帮助。如果不明白可以和我联系。

MenuItem CreateMenuItem(String text, String url, String toolTip, string value)
{
// Create a new MenuItem object.
MenuItem menuItem = new MenuItem();
// Set the properties of the MenuItem object using
// the specified parameters.
menuItem.Text = text;
menuItem.NavigateUrl = url;
menuItem.ToolTip = toolTip;
menuItem.Value = value;
return menuItem;
}
protected void Page_Load(object sender, EventArgs e)
{
//if (Convert.ToInt32(Session["userqx"]) < 4)
//{
// Menu1.Items.Clear;//.FindItem("sysmanager").Enabled = false.Items.Remove(sysmanager);//.
//}
Menu newmenu = new Menu();
newmenu.ID = "NavigationMenu";
newmenu.DisappearAfter = 2000;
newmenu.Orientation = Orientation.Horizontal;
newmenu.BackColor = System.Drawing.Color.FromName("#B5C7DE");
newmenu.DynamicHorizontalOffset = 2;
newmenu.ForeColor = System.Drawing.Color.FromName("#284E98");
newmenu.StaticSubMenuIndent = 10;
//newmenu.Font.Names = "宋体";
//newmenu.Font.Size = (FontUnit)(Small);


//newmenu.Target = "_blank";
newmenu.StaticMenuItemStyle.VerticalPadding = 2;
newmenu.StaticMenuItemStyle.HorizontalPadding = 5;
newmenu.StaticMenuItemStyle.ForeColor = System.Drawing.Color.FromName("Blue");
newmenu.StaticMenuItemStyle.BackColor = System.Drawing.Color.FromName("#C0C0FF");

newmenu.DynamicMenuItemStyle.ForeColor = System.Drawing.Color.FromName("#804000");
newmenu.DynamicMenuItemStyle.BackColor = System.Drawing.Color.FromName("#C0C0FF");
newmenu.DynamicMenuItemStyle.HorizontalPadding = 5;
newmenu.DynamicMenuItemStyle.VerticalPadding = 2;

newmenu.DynamicHoverStyle.BackColor = System.Drawing.Color.FromName("#284E98");
newmenu.DynamicHoverStyle.ForeColor = System.Drawing.Color.FromName("White");

newmenu.DynamicMenuStyle.BackColor = System.Drawing.Color.FromName("#B5C7DE");

newmenu.StaticSelectedStyle.BackColor = System.Drawing.Color.FromName("#507CD1");
newmenu.DynamicSelectedStyle.BackColor = System.Drawing.Color.FromName("#507CD1");

//newmenu.DynamicMenuStyle.HorizontalPadding = 5;
//newmenu.DynamicMenuStyle.VerticalPadding = 2;
newmenu.DynamicMenuStyle.BackColor = System.Drawing.Color.FromName("#B5C7DE");
//newmenu.DynamicMenuStyle.ForeColor = System.Drawing.Color.FromName("#804000");

MenuItem homemenu;
homemenu = CreateMenuItem("系统首页", "~/Default.aspx", "系统首页", "index");
newmenu.Items.Add(homemenu);

MenuItem reportmenu;
reportmenu = CreateMenuItem("报表", "", "报表", "reportcar");
MenuItem reportstopmenu;
reportstopmenu = CreateMenuItem("报停", "~/Default.aspx?Mid=downloadstopreport", "报停", "stopcar");
MenuItem reportalarmmenu;
reportalarmmenu = CreateMenuItem("违章", "~/Default.aspx?Mid=downloadalarmreport", "违章", "alarmcar");
MenuItem reportmonthmenu;
reportmonthmenu = CreateMenuItem("月综合", "~/Default.aspx?Mid=downloadmonthreport", "月综合", "monthcar");
reportmenu.ChildItems.Add(reportstopmenu);
reportmenu.ChildItems.Add(reportalarmmenu);
reportmenu.ChildItems.Add(reportmonthmenu);
newmenu.Items.Add(reportmenu);

MenuItem companyinfo;
companyinfo = CreateMenuItem("单位管理", "", "单位管理", "companyinfo");
MenuItem carinfo;
carinfo = CreateMenuItem("车辆", "~/Default.aspx?Mid=CarInfo", "车辆", "carinfo");
MenuItem driverinfo;
driverinfo = CreateMenuItem("从业人员", "~/Default.aspx?Mid=DriversInfo", "从业人员", "driverinfo");
companyinfo.ChildItems.Add(carinfo);
companyinfo.ChildItems.Add(driverinfo);
newmenu.Items.Add(companyinfo);
if (Convert.ToInt32(Session["qx"]) > 2)
{
MenuItem datamenu;
datamenu = CreateMenuItem("信息", "", "信息", "yuzhengdatamenu");
MenuItem newsdatamenu;
newsdatamenu = CreateMenuItem("新闻", "~/Default.aspx?MId=NewsInfo", "新闻", "newsdatamenu");
MenuItem callboarddatamenu;
callboarddatamenu = CreateMenuItem("公告", "~/Default.aspx?MId=CallBoardInfo", "公告", "callboarddatamenu");
datamenu.ChildItems.Add(newsdatamenu);
datamenu.ChildItems.Add(callboarddatamenu);
newmenu.Items.Add(datamenu);

}

if (Convert.ToInt32(Session["qx"]) >3)
{
MenuItem systmenu;
systmenu = CreateMenuItem("系统管理", "", "系统管理", "sysmanager");
MenuItem sysusermenu;
sysusermenu = CreateMenuItem("用户管理", "~/Default.aspx?Mid=usermanager", "用户管理", "manageruser");
MenuItem syscompanymmenu;
syscompanymmenu = CreateMenuItem("数据字典管理", "~/Default.aspx?Mid=dictmanager", "数据字典管理", "managercompany");
systmenu.ChildItems.Add(sysusermenu);
systmenu.ChildItems.Add(syscompanymmenu);
newmenu.Items.Add(systmenu);
}
MenuItem userinfomenu;
userinfomenu = CreateMenuItem("用户信息", "~/Default.aspx?MId=UserInfo", "用户信息", "sysuserinfo");
newmenu.Items.Add(userinfomenu);

MenuItem logoutmenu;
logoutmenu = CreateMenuItem("退出系统", "~/logout.aspx", "退出系统", "sysout");
newmenu.Items.Add(logoutmenu);

this.menuPlaceHolder.Controls.Add(newmenu);

}
}