判断是否从指定页面进入

        /// 检查进入当前页面 是否从指定页面过来的 
        /// </summary>
        /// <param name="Request">Request对象</param>
        /// <param name="FileName">文件名 不区分大小写</param>
        /// <returns></returns>
        public static bool CheckUrl(System.Web.HttpRequest Request,string FileName)
{
            bool Flag = false;
            try
{
                string Path = Request.UrlReferrer.LocalPath;
                string[] ArrayPath = Path.Split('/');
                Path = ArrayPath[ArrayPath.Length-1];
                Path = Path.Trim().ToLower();
                FileName = FileName.Trim().ToLower();
                if(Path == FileName)
{
                    Flag = true;
                }
            }

            return Flag;
        }

        private void CheckLimit()
{
            if(!systemcode.CheckUrl(Request,"DiscountManagePwd.aspx"))
{
                Response.Redirect("../ErrorPage.aspx?err=58",true);
                Response.End();
            }

            if(!Common.Limit.CheckLimit(5,8))
{
                Response.Redirect("../ErrorPage.aspx?err=58",true);
            }
        }

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace ERP1._0
{

    /// ErrorPage 的摘要说明。
    /// </summary>
    public class ErrorPage : System.Web.UI.Page
{
        protected System.Web.UI.WebControls.Label lbErrorInfo;
        protected System.Web.UI.HtmlControls.HtmlInputButton btnBack;
    
        private void Page_Load(object sender, System.EventArgs e)
{
            // 在此处放置用户代码以初始化页面
            if(!Page.IsPostBack)
{
                string ErrInfo = "<ol type='1'>";

                if(Request.QueryString["err"]!=null)
{
                    string ErrorInfo = Request.QueryString["err"].Trim();
                    string[] Info = ErrorInfo.Split('|');
                    for(int i = 0;i<Info.Length;i++)
{
                        ErrInfo += "<li><font color='red'>" + GetErrorInfo(Info[i]) + "</font>;";
                    }
                }
                else
{
                    ErrInfo = "<li><font color='red'>未知错误</font>";
                }

                ErrInfo += "</ol>";
                lbErrorInfo.Text = ErrInfo;

                string strUrl = Request.QueryString["url"];
                if(strUrl==null||strUrl==String.Empty)
{
                    btnBack.Attributes["onclick"] = "javascript:location.href='Finance/AccountInfo.aspx'";
                }
                else
{
                    btnBack.Attributes["onclick"] = "javascript:location.href='" + strUrl + "'";
                }
            }
        }


        override protected void OnInit(EventArgs e)
{
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();
            base.OnInit(e);
        }
        

        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
{    
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion

        private string GetErrorInfo(string ErrorID)
{
            string strError = "未知错误";
            if(ErrorID != String.Empty)
{
                switch(ErrorID)
{

{
                        strError = "对不起，您没有获取商家操作权限";
                        break;
                    }
                    case "12":
{
                        strError = "对不起，您没有销售组长操作权限";
                        break;
                    }
                    case "13":
{
                        strError = "对不起，您没有销售总监操作权限";
                        break;
                    }

{
                        strError = "对不起，您没有执行定单操作权限";
                        break;
                    }
                    case "22":
{
                        strError = "对不起，您没有审核关键词操作权限";
                        break;
                    }
                    case "23":
{
                        strError = "对不起，您没有索要发票操作权限";
                        break;
                    }

{
                        strError = "对不起，您没有款项操作权限";
                        break;
                    }
                    case "41":
{
                        strError = "对不起，您没有入款操作权限";
                        break;
                    }
                    case "42":
{
                        strError = "对不起，您没有款项转移操作权限";
                        break;
                    }
                    case "43":
{
                        strError = "对不起，您没有扣款操作权限";
                        break;
                    }
                    case "44":
{
                        strError = "对不起，您没有退货操作权限";
                        break;
                    }
                    case "45":
{
                        strError = "对不起，您没有入款审核操作权限";
                        break;
                    }
                    case "46":
{
                        strError = "对不起，您没有扣款审核操作权限";
                        break;
                    }
                    case "47":
{
                        strError = "对不起，您没有款项查询操作权限";
                        break;
                    }
                    case "48":
{
                        strError = "对不起，您没有显示帐户信息权限";
                        break;
                    }
                    case "49":
{
                        strError = "对不起，您没有商家结算操作权限";
                        break;
                    }

{
                        strError = "对不起，您没有发卡申请操作权限";
                        break;
                    }
                    case "52":
{
                        strError = "对不起，您没有发卡审核操作权限";
                        break;
                    }
                    case "53":
{
                        strError = "对不起，您没有制卡发行操作权限";
                        break;
                    }
                    case "54":
{
                        strError = "对不起，您没有发卡录入操作权限";
                        break;
                    }
                    case "55":
{
                        strError = "对不起，您没有停卡、挂失、查询、激活操作权限";
                        break;
                    }
                    case "56":
{
                        strError = "对不起，您没有转账、修改密码操作权限";
                        break;
                    }
                    case "57":
{
                        strError = "对不起，您没有终端商家管理的权限";
                        break;
                    }
                    case "58":
{
                        strError = "对不起，您没有折扣管理的权限";
                        break;
                    }
                    case "59":
{
                        strError = "对不起，您没有用户申请管理的权限";
                        break;
                    }

{
                        strError = "对不起，您没有销售分析操作权限";
                        break;
                    }
                    case "72":
{
                        strError = "对不起，您没有客户分析操作权限";
                        break;
                    }
                    case "73":
{
                        strError = "对不起，您没有会员分析操作权限";
                        break;
                    }
                    case "74":
{
                        strError = "对不起，您没有产品分析操作权限";
                        break;
                    }
                    case "75":
{
                        strError = "对不起，您没有投诉分析操作权限";
                        break;
                    }
                    case "76":
{
                        strError = "对不起，您没有售后分析操作权限";
                        break;
                    }
                    case "77":
{
                        strError = "对不起，您没有咨询分析操作权限";
                        break;
                    }
                    case "78":
{
                        strError = "对不起，您没有欠费分析操作权限";
                        break;
                    }

{
                        strError = "对不起，您没有用户管理操作权限";
                        break;
                    }
                    case "82":
{
                        strError = "对不起，您没有公司、部门管理操作权限";
                        break;
                    }
                    case "83":
{
                        strError = "对不起，您没有会员等级管理操作权限";
                        break;
                    }
                    case "84":
{
                        strError = "对不起，您没有产品信息管理操作权限";
                        break;
                    }
                    case "85":
{
                        strError = "对不起，您没有产品定价管理操作权限";
                        break;
                    }
                    case "86":
{
                        strError = "对不起，您没有角色管理操作权限";
                        break;
                    }
                    case "87":
{
                        strError = "对不起，您没有销售阶段管理操作权限";
                        break;
                    }
                    default:
{
                        break;
                    }
                }
            }
            return strError;
        }
    }
}