第三节：执行一些EF的增删改查

针对两表操作

一丶增加

 #region 05-增加操作
         /// <summary>
         /// 05-增加操作
         /// </summary>
         /// <param name="studentInfo">用来接收用户信息（涵盖多条件）</param>
         /// <param name="student_Photo">用来接收用户信息（涵盖多条件）</param>
         /// <returns></returns>
         public ActionResult AddExcute(StudentInfo studentInfo, Student_Photo student_Photo)
         {
             try
             {
                 //为数据库条目赋值
                 StudentInfo stuInfo = new StudentInfo()
                 {
                     id = Guid.NewGuid().ToString("N"),
                     name = studentInfo.name,
                     sex = studentInfo.sex,
                     age = studentInfo.age,
                     stuAddTime = DateTime.Now,
                 };
                 Student_Photo stu_Photo = new Student_Photo()
                 {
                     id = stuInfo.id,
                     photoUrl = student_Photo.photoUrl,
                     roomNumber = student_Photo.roomNumber,
                     addTime = DateTime.Now,
                 };
                 //进行插入
                 oc.BllSession.IStudentInfoBLL.AddNo(stuInfo);
                 oc.BllSession.IStudent_PhotoBLL.AddNo(stu_Photo);
                 //提交事务
                 int result = oc.BllSession.IStudentInfoBLL.SaveChange();
                 if (result > )
                 {
                     return Content("ok");
                 }
                 else
                 {
                     return Content("error");
                 }
             }
             catch (Exception ex)
             {
                 Common.Log.LogHelper.Info(ex.Message);
                 return Content("");  //只为了凑返回值，没有实际用处
             }

         }
         #endregion

二丶删除

 #region 06-删除操作
         /// <summary>
         /// 06-删除操作
         /// </summary>
         /// <param name="idsStr">id字符串</param>
         /// <returns></returns>
         public ActionResult DelExcute(string idsStr)
         {
             try
             {
                 //进行字符串拆分
                 string[] str = idsStr.Split(new char[] { ',' });
                 foreach (var item in str)
                 {   //根据id查找对应行
                     var stu_Info = oc.BllSession.IStudentInfoBLL.Entities.Where(a => a.id == item).FirstOrDefault();
                     var stu_Img = oc.BllSession.IStudent_PhotoBLL.Entities.Where(a => a.id == item).FirstOrDefault();
                     //进行删除
                     oc.BllSession.IStudentInfoBLL.DelNo(stu_Info);
                     oc.BllSession.IStudent_PhotoBLL.DelNo(stu_Img);
                 }
                 //提交事务
                 int result = oc.BllSession.IStudentInfoBLL.SaveChange();
                 if (result > )
                 {
                     return Content("ok");
                 }
                 else
                 {
                     return Content("error");
                 }
             }
             catch (Exception ex)
             {
                 Common.Log.LogHelper.Info(ex.Message);
                 return Content("");  //只为了凑返回值，没有实际用处
             }
         }
         #endregion

三丶修改

 #region 07-修改操作
         /// <summary>
         /// 07-修改操作
         /// </summary>
         /// <param name="studentInfo">学生表查询信息</param>
         /// <param name="student_Photo">学生图片信息</param>
         /// <returns></returns>
         public ActionResult UpdateExcute(StudentInfo studentInfo, Student_Photo student_Photo)
         {
             try
             {
                 //根据id号查询
                 var stu_Info = oc.BllSession.IStudentInfoBLL.Entities.Where(a => a.id == studentInfo.id).FirstOrDefault();
                 var stu_Img = oc.BllSession.IStudent_PhotoBLL.Entities.Where(a => a.id == studentInfo.id).FirstOrDefault();
                 //为学生信息赋值
                 stu_Info.name = studentInfo.name;
                 stu_Info.sex = studentInfo.sex;
                 stu_Info.age = studentInfo.age;
                 stu_Info.stuAddTime = DateTime.Now;

                 stu_Img.photoUrl = student_Photo.photoUrl;
                 stu_Img.roomNumber = student_Photo.roomNumber;
                 stu_Img.addTime = DateTime.Now;
                 //进行修改
                 oc.BllSession.IStudentInfoBLL.ModifyNo(stu_Info);
                 oc.BllSession.IStudent_PhotoBLL.ModifyNo(stu_Img);
                 //提交事务
                 int result = oc.BllSession.IStudentInfoBLL.SaveChange();
                 if (result > )
                 {
                     return Content("ok");
                 }
                 else
                 {
                     return Content("error");
                 }
             }
             catch (Exception ex)
             {
                 Common.Log.LogHelper.Info(ex.Message);
                 return Content("");  //只为了凑返回值，没有实际用处
             }
         }
         #endregion

四丶查询

 #region 04-多条件查询操作
         /// <summary>
         /// 04-多条件查询操作
         /// </summary>
         /// <param name="studentInfo">用来接收用户信息（涵盖多条件）</param>
         /// <param name="student_Photo">用来接收用户信息（涵盖多条件）</param>
         /// <param name="rows">行数</param>
         /// <param name="page">页码</param>
         /// <param name="dateStart">起始时间</param>
         /// <param name="dateEnd">结束时间</param>
         /// <returns></returns>
         public ActionResult StuList(StudentInfo studentInfo, Student_Photo student_Photo, int rows, int page, string dateStart, string dateEnd)
         {
             try
             {
                 //数据源
                 var stu_Info = oc.BllSession.IStudentInfoBLL.Entities;
                 var stu_Img = oc.BllSession.IStudent_PhotoBLL.Entities;

                 //下面开始进行过滤查询
                 //1.根据学生姓名查询
                 if (!String.IsNullOrEmpty(studentInfo.name))
                 {
                     stu_Info = stu_Info.Where(a => a.name.Contains(studentInfo.name));
                 }
                 //2.根据学生性别查询
                 if (!String.IsNullOrEmpty(studentInfo.sex))
                 {
                     stu_Info = stu_Info.Where(a => a.sex == studentInfo.sex);
                 }
                 //3.对时间进行排序
                 if (!String.IsNullOrEmpty(dateStart))
                 {
                     DateTime dateS = Convert.ToDateTime(dateStart);//开始时间
                     if (dateS != DateTime.MinValue)
                     {
                         stu_Info = stu_Info.Where(a => a.stuAddTime > dateS);
                     }
                 }
                 if (!String.IsNullOrEmpty(dateEnd))
                 {
                     DateTime dateE = Convert.ToDateTime(dateEnd);//开始时间
                     if (dateE != DateTime.MinValue)
                     {
                         stu_Info = stu_Info.Where(a => a.stuAddTime < dateE);
                     }
                 }
                 //4.根据学生宿舍号进行查询
                 if (!String.IsNullOrEmpty(student_Photo.roomNumber))
                 {
                     stu_Img = stu_Img.Where(a => a.roomNumber.Contains(student_Photo.roomNumber));
                 }
                 //连接查询
                 var StuList = (from a in stu_Info.ToList()
                                join b in stu_Img.ToList()
                                on a.id equals b.id
                                select new StuInfoAndImg
                                {
                                    id = a.id,
                                    name = a.name,
                                    sex = a.sex,
                                    age = a.age,
                                    stuAddTime = a.stuAddTime,
                                    delFlag = a.delFlag,
                                    pId = b.pId,
                                    photoUrl = b.photoUrl,
                                    roomNumber = b.roomNumber,
                                    addTime = b.addTime,
                                    delFlag1 = b.delFlag,
                                }).OrderByDescending(u => u.stuAddTime);

                 var json = new
                 {
                     total = StuList.Count(),
                     rows = StuList.Skip(rows * (page - )).Take(rows).ToList(),
                 };
                 return Json(json);
             }
             catch (Exception ex)
             {
                 Common.Log.LogHelper.Info(ex.Message);
                 return Content("");  //只为了凑返回值，没有实际用处
             }
         }
         #endregion

五丶附加

 #region 08-上传图片
         /// <summary>
         /// 08-上传图片
         /// </summary>
         /// <returns></returns>
         public ActionResult Upload()
         {
             try
             {
                 if (Request.Files.Count == )
                 {
                     return PackagingAjaxmsg(new AjaxMsgModel { BackUrl = null, Data = null, Msg = "未找到要上传的图片", Statu = AjaxStatu.err });
                 }
                 else
                 {
                     //得到上传的图片
                     var file = Request.Files[];
                     //要保存的文件路径
                     var path = Path.Combine(Server.MapPath(Request.ApplicationPath), "Upload", "Image");
                     if (!Directory.Exists(path))
                     {
                         Directory.CreateDirectory(path);
                     }
                     //要保存的文件名称
                     string fileName = string.Format("{0}_{1}{2}", oc.CurrentUser.uId, DateTime.Now.ToString("yyyyMMddHHmmss"), Path.GetExtension(file.FileName));
                     //保存文件到指定的目录
                     file.SaveAs(Path.Combine(path, fileName));
                     //上传之后图片的相对路径
                     string relativePath = Path.Combine(Request.ApplicationPath, "Upload", "Image", fileName);

                     return PackagingAjaxmsg(new AjaxMsgModel { BackUrl = relativePath, Data = null, Msg = "上传成功", Statu = AjaxStatu.ok });
                 }
             }
             catch (Exception ex)
             {
                 Common.Log.LogHelper.Info(ex.Message);
                 return PackagingAjaxmsg(new AjaxMsgModel { BackUrl = null, Data = null, Msg = "图片上传失败", Statu = AjaxStatu.err });
             }
         }
         #endregion

$("#j_btn1").uploadify({
            buttonText: '上传图片',
            height: 20,
            width: 120,
            swf: '/Content/uploadify/uploadify.swf',
            uploader: '/Test_Areas/Test/Upload',//通过后台的程序把文件上传到服务器
            multi: false,//是否允许同时选择多个文件
            fileSizeLimit: '8MB',//文件大小
            fileTypeExts: '*.gif;*.png;*.jpg;*jpeg',//可选文件的扩展名
            formData: {
                'folder': '/Upload', 'ASPSESSID': ASPSESSID, 'AUTHID': auth//测试
            },

            onUploadSuccess: function (file, data, response) {
                var jsonData = $.parseJSON(data);
                $.procAjaxMsg(jsonData, function () {
                    $.alertMsg(jsonData.Msg, '操作提示', function () {

                        $("#j_editForm img").attr("src", jsonData.BackUrl);
                        $("#j_ImgUrl").val(jsonData.BackUrl);
                    });
                }, function () {
                    $.alertMsg(jsonData.Msg, '操作提示', null);
                });
            },
            onUploadError: function (file, errorCode, errorMsg, errorString) {
                $.alertMsg('文件 ' + file.name + ' 上传失败: ' + errorString, '上传失败', null);
            },
            onSelectError: function (file, errorCode, errorMsg, errorString) {
                $.alertMsg('文件 ' + file.name + ' 不能被上传: ' + errorString, '选择失效', null);
            }
        })