using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Web.Security;using System.Web;using System.Web.UI;using CSharpLib.Entity;using System.IO;using System.Web.Script.Serialization;namespace CSharpLib.Common{    public class Utility    {        public static string Substring(string text, int index)        {            return text.Length > index ? text.Substring(0, index) + "..." : text;        }        public static WebSiteEntities OpenConnect()        {            return new WebSiteEntities();        }        public static string Substring(string text, int index, string strEnding)        {            return text.Length > index ? text.Substring(0, index) + strEnding : text;        }        public static void MessageShow(Page pInstance, string msg)        {            ClientScriptManager csm = pInstance.ClientScript;            csm.RegisterStartupScript(pInstance.GetType(), "message", "");        }        public static void MessageShowUrl(Page pInstance, string strMessage, string strFileName)        {            ClientScriptManager csm = pInstance.ClientScript;            string strContent = string.Format("", strMessage, strFileName);            csm.RegisterStartupScript(pInstance.GetType(), "message", strContent);        }        public static string GetClientIP()        {            string result = String.Empty;            result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];            if (null == result || result == String.Empty)            {                result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];            }            if (null == result || result == String.Empty)            {                result = HttpContext.Current.Request.UserHostAddress;            }            if (null == result || result == String.Empty)            {                return "0.0.0.0";            }            return result;        }        public static string EncryptPassword(string strPassword)        {            return FormsAuthentication.HashPasswordForStoringInConfigFile(strPassword, "sha1").Substring(0, 32).ToString();        }        public static string JsonSerializer(object obj)        {            JavaScriptSerializer json = new JavaScriptSerializer();            return json.Serialize(obj);        }        public static void SendJson(string data)        {            HttpContext.Current.Response.Write(data);            HttpContext.Current.Response.End();        }        //public static ICacheManager GetCacheNode()        //{        //    return CacheFactory.GetCacheManager();        //}    }}