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跟iis没有任何关系代码的问题

跟iis有毛关系。跟你自己写的代码有问题

using System;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;public partial class _Default : System.Web.UI.Page
{
   protected void Page_Load(object sender, EventArgs e)
   {
   if (CookieHelper_Cai.HaveCookie("WaterFee", "Uname"))
   {
   Response.Redirect("HomeS.aspx");
   }
   else
   {

  }
   }   protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
   {
   string names = "";
   string pwd = "", ip = "";
   names = this.UnameS.Text.Trim();
   pwd = this.Pawd.Text.Trim();

  if (!string.IsNullOrEmpty(names) && !string.IsNullOrEmpty(pwd))
   {
   ip = RequestSafe_Cai.GetIP();
   pwd = MD5_Cai.Encrypt(pwd);
   if (AdminUserSExecutSqlS.Admin_User_LoginIn(names, pwd, ip))
   {
   DataTable dt = new DataTable();
   dt = AdminUserSExecutSqlS.Admin_User_ShowOneByUname(names);
   if (dt != null)
   {
   if (dt.Rows.Count > 0)
   {
   CookieHelper_Cai.AddCookie("WaterFee", "Uname", names, 1);
   CookieHelper_Cai.AddCookie("WaterFee", "Uid", dt.Rows[0]["ad_ID"].ToString(), 1);
   CookieHelper_Cai.AddCookie("WaterFee", "Utruename", System.Web.HttpUtility.UrlEncode(dt.Rows[0]["ad_userTrueName"].ToString()), 1);
   Response.Redirect("Default.aspx");
   }
   else
   {
   JSscript.AlertAndGoTo("用户名密码正确，但未设定真实姓名，请联系管理员", "Default.aspx");
   Response.End();
   }
   }
   else
   {
   JSscript.AlertAndGoTo("用户名密码正确，但未设定真实姓名，请联系管理员", "Default.aspx");
   Response.End();
   }
   }
   else
   {
   JSscript.AlertAndGoTo("登录失败，可能用户名密码不正确", "Default.aspx");
   Response.End();
   }
   }
   else
   {
   JSscript.AlertAndGoTo("帐号和密码都不能为空", "Default.aspx");
   Response.End();
   }   }
}=================有关的cs片断是：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Data.SqlClient;/// <summary>
///AdminUserSExecutSqlS 的摘要说明
/// </summary>
public class AdminUserSExecutSqlS
{
public AdminUserSExecutSqlS()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
   /// <summary>
   /// 添加用户
   /// </summary>
   /// <param name="uname"></param>
   /// <param name="upawd"></param>
   /// <param name="utruename"></param>
   /// <returns></returns>
   public static bool Admin_User_Add(string uname,string upawd,string utruename)
   {
   string Sqls = "INSERT INTO [CaiZ_Admin_UserS] ([ad_userName] ,[ad_userPwd] ,[ad_userTrueName],[ad_loginTime]) VALUES ";
   Sqls += " (@ad_userName ,@ad_userPwd ,@ad_userTrueName,@ad_loginTime)";
   SqlParameter[] ParmS = new SqlParameter[] {
   new SqlParameter("@ad_userName",uname),
   new SqlParameter("@ad_userPwd",upawd),
   new SqlParameter("@ad_userTrueName",utruename),
   new SqlParameter("@ad_loginTime",System.DateTime.Now),
   };
   return SQLHelper.ExecuteSql(Sqls, ParmS) > 0;
   }
   /// <summary>
   /// 用户是否为删除过的用户
   /// </summary>
   /// <param name="uname"></param>
   /// <returns></returns>
   public static bool IsDelByUserS(string uname)
   {
   string Sqls = "select ISNULL((select ad_id from CaiZ_Admin_UserS where ad_userName='" + uname + "'),0)";
   return Convert.ToInt32(SQLHelper.GetSingle(Sqls)) > 0;
   }

  /// <summary>
   /// 显示某一个用户
   /// </summary>
   /// <param name="uname"></param>
   /// <param name="upawd"></param>
   /// <param name="utruename"></param>
   /// <returns></returns>
   public static DataTable Admin_User_ShowOneByUname(string uname)
   {
   DataTable dt = new DataTable();
   DataSet ds = new DataSet();
   string Sqls = "select ad_ID,[ad_userName] ,[ad_userPwd] ,[ad_userTrueName] ,[ad_loginCount] ,[ad_loginTime] ,[ad_loginIp] ,[ad_stateLock]";
   Sqls += " FROM [CaiZ_Admin_UserS] where [ad_stateDel]=0 and [ad_userName]='" + uname + "'";
   ds = SQLHelper.Query(Sqls);
   if (ds.Tables.Count > 0)
   {
   dt = ds.Tables[0];
   }
   return dt;
   }   /// <summary>
   /// 显示某一个用户
   /// </summary>
   /// <param name="uname"></param>
   /// <param name="upawd"></param>
   /// <param name="utruename"></param>
   /// <returns></returns>
   public static DataTable Admin_User_List()
   {
   DataTable dt = new DataTable();
   DataSet ds = new DataSet();
   string Sqls = "select ad_ID,[ad_userName] ,[ad_userPwd] ,[ad_userTrueName] ,[ad_loginCount] ,[ad_loginTime] ,[ad_loginIp] ,[ad_stateLock]";
   Sqls += " FROM [CaiZ_Admin_UserS] where [ad_stateDel]=0 ";
   ds = SQLHelper.Query(Sqls);
   if (ds.Tables.Count > 0)
   {
   dt = ds.Tables[0];
   }
   return dt;
   }
   /// <summary>
   /// 显示某一个用户
   /// </summary>
   /// <param name="uname"></param>
   /// <param name="upawd"></param>
   /// <param name="utruename"></param>
   /// <returns></returns>
   public static DataTable Admin_User_ShowOneById(int id)
   {
   DataTable dt = new DataTable();
   DataSet ds = new DataSet();
   string Sqls = "select ad_ID,[ad_userName] ,[ad_userPwd] ,[ad_userTrueName] ,[ad_loginCount] ,[ad_loginTime] ,[ad_loginIp] ,[ad_stateLock]";
   Sqls += " FROM [CaiZ_Admin_UserS] where [ad_stateDel]=0 and [ad_ID]=" + id + "";
   ds = SQLHelper.Query(Sqls);
   if (ds.Tables.Count > 0)
   {
   dt = ds.Tables[0];
   }
   return dt;
   }   /// <summary>
   /// 更新用户用户
   /// </summary>
   /// <param name="uname"></param>
   /// <param name="upawd"></param>
   /// <param name="utruename"></param>
   /// <returns></returns>
   public static bool Admin_User_Update(string utruename,int id)
   {
   string Sqls = "update [CaiZ_Admin_UserS] set [ad_userTrueName]=@ad_userTrueName ";
   Sqls += " Where ad_ID=@ad_ID and ad_stateDel=0";
   SqlParameter[] ParmS = new SqlParameter[] {
   new SqlParameter("@ad_userTrueName",utruename),
   new SqlParameter("@ad_ID",id),
   };
   return SQLHelper.ExecuteSql(Sqls, ParmS) > 0;
   }
   /// <summary>
   /// 密码初始化
   /// </summary>
   /// <param name="uname"></param>
   /// <param name="upawd"></param>
   /// <param name="utruename"></param>
   /// <returns></returns>
   public static bool Admin_User_UpdatePwd(string upawd, int id)
   {
   string Sqls = "update [CaiZ_Admin_UserS] set [ad_userPwd]=@ad_userPwd ";
   Sqls += "Where ad_ID=@ad_ID and ad_stateDel=0";
   SqlParameter[] ParmS = new SqlParameter[] {
   new SqlParameter("@ad_userPwd",upawd),
   new SqlParameter("@ad_ID",id),
   };
   return SQLHelper.ExecuteSql(Sqls, ParmS) > 0;
   }
   /// <summary>
   /// 密码初始化
   /// </summary>
   /// <param name="uname"></param>
   /// <param name="upawd"></param>
   /// <param name="utruename"></param>
   /// <returns></returns>
   public static bool Admin_User_Del(int id)
   {
   string Sqls = "update [CaiZ_Admin_UserS] set [ad_stateDel]=1 ";
   Sqls += "Where ad_ID=@ad_ID and ad_stateDel=0";
   SqlParameter[] ParmS = new SqlParameter[] {
   new SqlParameter("@ad_ID",id),
   };
   return SQLHelper.ExecuteSql(Sqls, ParmS) > 0;
   }   /// <summary>
/// 更新用户用户
/// </summary>
/// <param name="uname"></param>
/// <param name="upawd"></param>
/// <param name="utruename"></param>
/// <returns></returns>
public static bool Admin_User_LoginIn(string utruename, string pwd,string ip)
{
string Sqls = "update [CaiZ_Admin_UserS] set ad_loginCount=ad_loginCount+1,ad_loginTime=@ad_loginTime,ad_loginIp=@ad_loginIp";
Sqls += " Where [ad_userName]=@ad_userName and ad_userPwd=@ad_userPwd and ad_stateDel=0";
SqlParameter[] ParmS = new SqlParameter[] {
new SqlParameter("@ad_loginTime",System.DateTime.Now),
new SqlParameter("@ad_loginIp",ip),
new SqlParameter("@ad_userName",utruename),
new SqlParameter("@ad_userPwd",pwd),
};
return SQLHelper.ExecuteSql(Sqls, ParmS) > 0;
}}估计是最后更新用户用户这段代码有问题.请教高手。

原文在这:http://topic.csdn.net/u/20120807/10/87edf857-0c87-4ce8-b87a-48b71e9508c0.html?seed=1501983708&r=79336374#r_79336374,

空引用异常。什么地方出现的异常你就在哪里debug

确实是WEB.CONFIG 问题，再里面加一行 <compilation debug="true">就OK了。

调试易

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