/// <summary>
 /// 删除资源文件
 /// </summary>
 /// <param name="context"></param>
 public void DelRecources(HttpContext context)
 {
     ZwJson zwJson = new ZwJson();
     ResourcesService resourcesService = new ResourcesService(session);
     var name = context.Request.Params["name"];
     var courseid = context.Request.Params["courseid"];
     var type = context.Request.Params["type"];
     var pathAll = "";
     switch (type)
     {
         case "课程列表":
             pathAll = _filepath + courseid + @"\" + name;
             break;
         case "视频列表":
             pathAll = _video + courseid + @"\" + name;
             break;
         case "flashPdf":
             pathAll = _flash + courseid + @"\" + name;
             break;
     }
     try
     {
         resourcesService.DeleteByName(new Resources()
         {
             Name = name,
             Flag = type
         });
         zwJson.IsSuccess = true;
         zwJson.JsExecuteMethod = "ajax_DelRecources";
         File.Delete(pathAll);
         context.Response.Write(_jss.Serialize(zwJson));
     }
     catch (Exception)
     {
         throw;
     }
 }
 /// <summary>
 /// 保存课程资源文件
 /// </summary>
 /// <param name="context"></param>
 public void SaveFile(HttpContext context)
 {
     ZwJson zwJson = new ZwJson();
     ResourcesService resourcesService = new ResourcesService(session);
     HttpPostedFile file = context.Request.Files["Filedata"];
     var courseid = context.Request.Params["id"];
     var type = context.Request.Params["type"];
     Resources resources = new Resources();
     if (file == null) return;
     var pathAll = "";
     var httppath = "";
     var pathDirectory = "";
     switch (type)
     {
         case "课程列表":
             pathAll = _filepath + courseid + @"\" + file.FileName;
             httppath = "/CourseFile/" + courseid + @"\" + file.FileName;
             pathDirectory = _filepath + courseid;
             break;
         case "视频列表":
             pathAll = _video + courseid + @"\" + file.FileName;
             httppath = "/OlFile/" + courseid + @"\" + file.FileName;
             pathDirectory = _video + courseid;
             break;
         case "flashPdf":
             pathAll = _flash + courseid + @"\" + file.FileName;
             httppath = "/FlashFile/" + courseid + @"\" + file.FileName;
             pathDirectory = _flash + courseid;
             break;
     }
     var url = UrlHelper.Resolve(httppath);
     int size = file.ContentLength / 1024;
     var flag = file.ContentLength % 1024;
     if (flag > 0)
     {
         size++;
     }
     resources.FileSize = size.ToString(CultureInfo.InvariantCulture);
     resources.Flag = type;
     resources.Name = file.FileName;
     resources.FileType = file.FileName.Split('.')[file.FileName.Split('.').Length - 1];
     resources.FilePath = url;
     resources.CreateDt = DateTime.Now;
     resources.Course = new Model.Course()
     {
         Id = courseid
     };
     if (!Directory.Exists(pathDirectory))
     {
         Directory.CreateDirectory(pathDirectory);
     }
     if (File.Exists(pathAll))
     {
         resourcesService.DeleteByName(resources);
     }
     resources.Id = Guid.NewGuid().ToString();
     resourcesService.Save(resources);
     file.SaveAs(pathAll);
     //zwJson.IsSuccess = true;
     //zwJson.JsExecuteMethod = "ajax_SaveFile";
     //context.Response.Write(_jss.Serialize(zwJson));
 }