using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Text;

namespace cuidian.Common
{
    public class AppSeting
    {
        private static AppSeting __app = new AppSeting();

        private AppSeting()
        { }

        public static AppSeting Instance
        {
            get { return __app; }
        }

        public string GetConnectstr(string key)
        {

            if (ConfigurationManager.ConnectionStrings[key] == null)
            {
                throw new Exception("配置文件中没有连接字串" + key);
            }
            return ConfigurationManager.ConnectionStrings[key].ToString();


        }

        public string GetValue(string key)
        {
            List<string> list = new List<string>();

            //list = (List<string>)ConfigurationManager.AppSettings.Keys.Cast<string>();
            if (ConfigurationManager.AppSettings.AllKeys.ToList().Contains(key))
            {
                return ConfigurationManager.AppSettings[key].ToString();
      
            }
            else
            {
                return string.Empty;
            }

            

        }

    }
}