private string GetTwoMenu(string db)
        {
            var builder = new StringBuilder();
            var twoList = DataTableDal.GetInstance().GetList(db);

            if (twoList.Count > 0)
            {
                var strTwoMenu = new StringBuilder();
                foreach (var twoMenu in twoList)
                {
                    strTwoMenu.AppendFormat("<li><a link=\"DataColumn/?db={0}&table={1}\">{2}({1})</a></li>", db,
                                            twoMenu.Name, twoMenu.Description);
                }
                if (!strTwoMenu.IsNullOrEmpty())
                {
                    builder.AppendLine("<ul class=\"easyui-tree\">");
                    builder.AppendLine(strTwoMenu.ToString());
                    builder.AppendLine("</ul>");
                }
            }
            return(builder.ToString());
        }
 /// <summary>
 /// 获取数据
 /// </summary>
 /// <param name="db">数据库名称</param>
 /// <returns></returns>
 public IList <DataTableInfo> GetList(string db)
 {
     return(DataTableDal.GetInstance().GetList(db));
 }