记录页面访问者的信息

        文章访问的历史记录 创建：章学敏 2007-06-16#region 文章访问的历史记录 创建：章学敏 2007-06-16
        /**//// <summary>
        /// 获取文章的最新浏览用户
        /// 章学敏
        /// 2007-6-16
        /// </summary>
        /// <param name="articleID">文章ID</param>
        /// <param name="userID">用户ID</param>
        /// <returns></returns>
        public IList<Forum_AuthorInfo> GetLastViewers(string articleID,string userID)
        ...{            
            IList<Forum_AuthorInfo> lastViewer = new List<Forum_AuthorInfo>();
            //如果是匿名用户，则不更新浏览记录
            if (Convert.ToInt32(userID) == 0)
            ...{}
            else
            ...{
                UpdateLastViewer(userID, articleID);
            }
            string users = GetLastViewUsers(articleID);
            if (string.IsNullOrEmpty(users))
            ...{
                lastViewer = null;
            }
            else
            ...{
                string[] userlist = users.Split(',');
                for (int i = userlist.Length - 1; i >= 0; i--)
                ...{
                    SqlDataReader sdr = null;
                    int UserID = Convert.ToInt32(userlist[i]);
                    SqlParameter param = MakeSqlInParameter(POST_USERID, UserID);
                    sdr = RunReaderProcedure("Forum_GetAuthorInfoByAuthorID", param);
                    while (sdr.Read())
                    ...{
                        lastViewer.Add(new Forum_AuthorInfo(sdr.GetInt32(0), "1", "1", sdr.GetString(1), "1", sdr.GetString(2), "1", "1",
                            "1", "1", "1", "1", "1", "1", "1", "1"));//修改存储过程可以扩展
                    }
                    sdr.Close();
                    sdr.Dispose();
                }
            }
            return lastViewer;
        }

        /**//// <summary>
        /// 获取数据库中的最近访问的用户
        /// 章学敏
        /// 2007-6-16
        /// </summary>
        /// <param name="articleID">文章的ID</param>
        /// <param name="userID">用户ID</param>
        /// <returns></returns>
        private string GetLastViewUsers(string articleID)
        ...{
            SqlParameter param = MakeSqlInParameter(POST_ID, articleID);          //读取前的跟新
           

            try
            ...{
                string users = RunScalar("Forum_GetLastViewUsers", param);
                return users;
            }
            catch ...{ return " "; }
        }

        /**//// <summary>
        /// 跟新文章的访问
        /// 章学敏
        /// 2007-06-15
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="articleID"></param>
        private void UpdateLastViewer(string userID,string articleID)
        ...{
            string LastViews=GetLastViewUser(GetLastViewUsers(articleID),userID);

            SqlParameter[] paramList =...{MakeSqlInParameter("@LastViewUsers",LastViews),
                    MakeSqlInParameter(POST_ID,articleID)};

            RunNoneQueryProcedure("Forum_UpdateLastViewers", paramList);            
        }
        /**//// <summary>
        /// 截取文章最近访问的6个人
        /// 章学敏
        /// 2007-06-15
        /// <remarks>
        /// 该函数主要是实现对访问某一文章的人进行记录和添加
        /// 如果访问人数是制定的访问人数
        /// 如果是第一次访问
        /// 如果访问人数为达到制定的人数
        /// 三种情况
        /// </remarks>
        /// </summary>
        private string GetLastViewUser(string lastViewUser,string userID)
        ...{
            int selectValue = 6;
            int i = 0;
            int j = 20;
            int t = 0;
            int flag = 0;
            int k = selectValue;
            string[] temp1 = lastViewUser.Split(',');
            string result = "";
            if (temp1.Length < selectValue)
            ...{
                k = temp1.Length + 1;
            }
            else
            ...{
                k = selectValue;
            }
            string[] temp2 = new string[k];
            for (i = 0; i < temp1.Length; i++)
            ...{
                if (temp1[i] == userID)
                ...{
                    j = i;
                    flag = 1;
                    break;
                }
            }
            if (j == 20)
            ...{
                if (string.IsNullOrEmpty(lastViewUser))
                ...{
                    temp2[0] = userID;
                }
                else
                ...{
                    if (temp1.Length != selectValue)
                    ...{
                        for (i = 0; i < temp1.Length; i++)
                        ...{
                            temp2[i] = temp1[i];
                        }
                        temp2[i] = userID;
                    }
                    else
                    ...{
                        for (i = 0; i < temp1.Length - 1; i++)
                        ...{
                            temp2[i] = temp1[i + 1];
                            t = i;
                        }
                        temp2[i] = userID;
                    }
                }
            }
            else
            ...{
                if (string.IsNullOrEmpty(lastViewUser))
                ...{
                    temp2[0] = userID;
                }
                else
                ...{
                    for (i = 0; i < temp1.Length; i++)
                    ...{
                        if (i < j)
                        ...{
                            temp2[i] = temp1[i];
                        }
                        else if (i < temp1.Length - 1)
                        ...{
                            temp2[i] = temp1[i + 1];
                        }
                        else
                        ...{
                            temp2[i] = userID;
                        }
                    }
                }
            }

            for (i = 0; i < k; i++)
            ...{               
                if (i < k - 1)
                ...{
                    if (flag == 0)
                    ...{
                        if (string.IsNullOrEmpty(lastViewUser))
                        ...{
                            result = temp2[0];
                            break;
                        }
                        result = result + temp2[i] + ",";
                    }
                    else
                    ...{
                        if (i < k - 2)
                        ...{
                            result = result + temp2[i] + ",";
                        }
                        else
                        ...{
                            result = result + temp2[i];
                            break;
                        }
                    }
                }
                else
                    result = result + temp2[i];
            }
            return result;
        }
        #endregion

以上是一个记录用户访问的函数，主要功能是记录文章或博客的访问者信息。