/// <summary>
        /// 删除公告
        /// </summary>
        /// <param name="onticeId"></param>
        /// <returns></returns>
        public ActionResult NoticeDelete(int NoticeID)
        {
            try
            {
                B_NoticeTable dbNoticeTable = (from tbNoticeTable in myDYXTEntities.B_NoticeTable
                                               where tbNoticeTable.NoticeID == NoticeID
                                               select tbNoticeTable).Single();

                //删除数据
                myDYXTEntities.B_NoticeTable.Remove(dbNoticeTable);
                //--->删除插图 公告内容 txt文件路径
                string NoticeTablepath = Server.MapPath("~/Document/Notice/Text/") + dbNoticeTable.NoticeContent;

                if (System.IO.File.Exists(NoticeTablepath))
                {
                    //读取原始的文本内容
                    //存在文件
                    string oldTextContent = System.IO.File.ReadAllText(NoticeTablepath);

                    //匹配出文件名称 删除
                    MatchCollection oldMatchs = Regex.Matches(oldTextContent, "(?<=Document/Notice/).+?(?=\".+?/>)");
                    foreach (Match match in oldMatchs)
                    {
                        // 删除文件
                        string dfilePath = Server.MapPath("~/Document/Notice/") + match.Value;
                        System.IO.File.Delete(dfilePath);
                    }
                }
                //--->删除公告内容txt文件
                System.IO.File.Delete(NoticeTablepath);
                myDYXTEntities.SaveChanges();
                return(Json(true, JsonRequestBehavior.AllowGet));
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                //"数据异常!";
            }
            return(Json(false, JsonRequestBehavior.AllowGet));
        }
        [ValidateInput(false)]//由于要存入HTML,关闭验证
        public ActionResult NoticeUpdate(B_NoticeTable B_Notice, HttpPostedFileBase noticeCarouseImage)
        {
            try
            {
                int User = Convert.ToInt32(Session["AccountID"].ToString());
                //保存的插入的图片
                List <string> savedImageList = new List <string>();
                //原始的插入图片
                List <string> oldSavedImageList = new List <string>();
                //检查公告标题不为空
                if (!string.IsNullOrEmpty(B_Notice.Title))
                {
                    B_NoticeTable dbNotice = (from tbNoticeTable in myDYXTEntities.B_NoticeTable
                                              where tbNoticeTable.NoticeID == B_Notice.NoticeID
                                              select tbNoticeTable).Single();

                    //检查 存放公告内容的 目录是否存在,不存在就创建
                    if (!Directory.Exists(Server.MapPath("~/Document/Notice/Text/")))
                    {
                        Directory.CreateDirectory(Server.MapPath("~/Document/Notice/Text/"));
                    }

                    //检查目录是否存在,不存在就创建
                    if (!Directory.Exists(Server.MapPath("~/Document/Notice/NoticeCarousel/")))
                    {
                        Directory.CreateDirectory(Server.MapPath("~/Document/Notice/NoticeCarousel/"));
                    }

                    //--->用txt文件来保存公告内容
                    //txt文件名称
                    string fileName;
                    //txt文件路径
                    string filePath;
                    //加载公告内容
                    string oldFilePath = Server.MapPath("~/Document/Notice/Text/") + dbNotice.NoticeContent;
                    if (System.IO.File.Exists(oldFilePath))
                    {
                        //读取原始的文本内容
                        //存在文件
                        string oldTextContent = System.IO.File.ReadAllText(oldFilePath);
                        //匹配出文件名称 保存到list oldSavedImageList
                        MatchCollection oldMatchs = Regex.Matches(oldTextContent, "(?<=Document/Notice/).+?(?=\".+?/>)");
                        foreach (Match match in oldMatchs)
                        {
                            oldSavedImageList.Add(match.Value);
                        }
                        //获取文件名称
                        fileName = dbNotice.NoticeContent;
                        //文件路径
                        filePath = oldFilePath;
                    }
                    else
                    {
                        //不存在文件
                        fileName = DateTime.Now.ToUniversalTime().ToString("yyyy-MM-dd") + "-" + Guid.NewGuid() + ".txt";
                        //文件路径
                        filePath = Server.MapPath("~/Document/Notice/Text/") + fileName;
                    }
                    //txt文件内容
                    string textContent = B_Notice.NoticeContent;
                    //-----获取最终保存名称到数据中的文件
                    MatchCollection matchs = Regex.Matches(textContent, "(?<=Document/Notice/).+?(?=\".+?/>)");
                    foreach (Match match in matchs)
                    {
                        savedImageList.Add(match.Value);
                    }

                    //检查没有使用的插图,将其删除
                    //遍历原来的插图文件列表oldSavedImageList,如在现在的文件列表savedImageList,则在使用;
                    //如不在,则未使用应该移除
                    foreach (string str in oldSavedImageList)
                    {
                        //判断是否存在,不存在就删除
                        if (!savedImageList.Contains(str))
                        {
                            //删除文件
                            string dfilePath = Server.MapPath("~/Document/Notice/") + str;
                            try
                            {
                                System.IO.File.Delete(dfilePath);
                            }
                            catch (Exception e)
                            {
                                Console.WriteLine(e);
                            }
                        }
                    }

                    //获取上传的临时插图文件表(未保存的)
                    List <string> tempFile = new List <string>();
                    if (Session["tempEditorFile"] != null)
                    {
                        tempFile = Session["tempEditorFile"] as List <string>;
                    }
                    if (tempFile != null)
                    {
                        string dFilePath = Server.MapPath("~/Document/Notice/");
                        //遍历临时文件表
                        foreach (string s in tempFile)
                        {
                            //当临时文件表中的文件 不存在 于被保存的文件时,删除该文件,避免文件冗余
                            if (!savedImageList.Contains(s))
                            {
                                string strdeletePath = dFilePath + s;
                                try
                                {
                                    System.IO.File.Delete(strdeletePath);
                                }
                                catch (Exception e)
                                {
                                    Console.WriteLine(e);
                                }
                            }
                        }
                    }

                    //保存文件 公告内容的txt文件
                    TextWriter textWriter = new StreamWriter(filePath, false, new System.Text.UTF8Encoding(false));
                    textWriter.Write(textContent);
                    textWriter.Close();

                    //更新公告信息
                    dbNotice.NoticeTypeID   = B_Notice.NoticeTypeID;
                    dbNotice.NoticeStatusID = B_Notice.NoticeStatusID;
                    dbNotice.IssueTime      = DateTime.Now;//发布时间
                    dbNotice.ArticleLabel   = B_Notice.ArticleLabel;
                    dbNotice.Title          = B_Notice.Title;

                    dbNotice.NoticeContent = fileName;                                              //公告内容
                    dbNotice.AccountID     = User;
                    myDYXTEntities.Entry(dbNotice).State = System.Data.Entity.EntityState.Modified; //改为修改状态
                    myDYXTEntities.SaveChanges();
                    //移除session
                    Session.Remove("tempEditorFile");

                    return(Json(true, JsonRequestBehavior.AllowGet));
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
            return(Json(false, JsonRequestBehavior.AllowGet));
        }
        [ValidateInput(false)]//由于要存入HTML,关闭验证
        public ActionResult NoticeInsert(B_NoticeTable B_Notice, HttpPostedFileBase noticeCarouseImage)
        {
            try
            {
                int User = Convert.ToInt32(Session["AccountID"].ToString());
                //定义list 存放需要保存的富文本框图片的名称
                List <string> savedImageList = new List <string>();
                if (!string.IsNullOrEmpty(B_Notice.Title))
                {
                    //检查 存放公告内容的 目录是否存在,不存在就创建
                    if (!Directory.Exists(Server.MapPath("~/Document/Notice/Text/")))
                    {
                        Directory.CreateDirectory(Server.MapPath("~/Document/Notice/Text/"));
                    }

                    //--->用txt文件来保存公告内容
                    //txt文件名称
                    string fileName = DateTime.Now.ToString("yyyy-MM-dd") + "-" + Guid.NewGuid() + ".txt";
                    //txt文件路径
                    string filePath = Server.MapPath("~/Document/Notice/Text/") + fileName;
                    //txt文件内容
                    string textCount = B_Notice.NoticeContent;

                    //-----获取最终保存的图片文件
                    MatchCollection matchs = System.Text.RegularExpressions.Regex.Matches(textCount, "(?<=/Document/Notice/).+?(?=\".+?/>)");
                    foreach (Match match in matchs)
                    {
                        savedImageList.Add(match.Value);
                    }

                    //保存文件 txt文件
                    //StreamWriter 文件路径,是否追加,文件编码
                    TextWriter textWriter = new StreamWriter(filePath, false, new System.Text.UTF8Encoding(false));
                    textWriter.Write(textCount);
                    textWriter.Close();

                    //保存公告信息
                    B_Notice.AccountID     = User;         //登录用户
                    B_Notice.NoticeContent = fileName;     //公告内容
                    B_Notice.IssueTime     = DateTime.Now; //发布时间
                                                           //保存公告数据
                    myDYXTEntities.B_NoticeTable.Add(B_Notice);
                    myDYXTEntities.SaveChanges();

                    //清理上传到富文本框中,后被删除(即未被使用的图片)
                    //获取上传的临时图片文件表(未保存的)
                    List <string> tempFile = new List <string>();
                    if (Session["tempEditorFile"] != null)
                    {
                        tempFile = Session["tempEditorFile"] as List <string>;
                    }
                    if (tempFile != null)
                    {
                        string dFilePath = Server.MapPath("~/Document/Notice/");
                        //遍历临时文件表
                        foreach (string img in tempFile)
                        {
                            //当临时文件表中的文件不存在于被保存的文件时,删除该文件,避免文件冗余
                            if (!savedImageList.Contains(img))
                            {
                                string strdeletePath = dFilePath + img;
                                try
                                {
                                    System.IO.File.Delete(strdeletePath);
                                }
                                catch (Exception e)
                                {
                                }
                            }
                        }
                    }
                    return(Json(true, JsonRequestBehavior.AllowGet));
                }
            }
            catch (Exception e)
            {
            }
            return(Json(false, JsonRequestBehavior.AllowGet));
        }