动态加载主题

实现动态加载主题的核心是修改Page对象的Theme属性

 

 void Page_PreInit(Object sender, EventArgs e)
    {
        if (Request.QueryString["theme"] == null)
        {
            theme = "Themes1";
        }
        else
        {
            theme = Request.QueryString["theme"];
        }

        Page.Theme = theme;//加载主题
        ListItem item = DropDownList1.Items.FindByValue(theme);
        if (item != null)
        {
            item.Selected = true;
        }
    }