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第三节：执行一些EF的增删改查

针对两表操作

一丶增加

 1 #region 05-增加操作
 2         /// <summary>
 3         /// 05-增加操作
 4         /// </summary>
 5         /// <param name="studentInfo">用来接收用户信息（涵盖多条件）</param>
 6         /// <param name="student_Photo">用来接收用户信息（涵盖多条件）</param>
 7         /// <returns></returns>
 8         public ActionResult AddExcute(StudentInfo studentInfo, Student_Photo student_Photo)
 9         {
10             try
11             {
12                 //为数据库条目赋值
13                 StudentInfo stuInfo = new StudentInfo()
14                 {
15                     id = Guid.NewGuid().ToString("N"),
16                     name = studentInfo.name,
17                     sex = studentInfo.sex,
18                     age = studentInfo.age,
19                     stuAddTime = DateTime.Now,
20                 };
21                 Student_Photo stu_Photo = new Student_Photo()
22                 {
23                     id = stuInfo.id,
24                     photoUrl = student_Photo.photoUrl,
25                     roomNumber = student_Photo.roomNumber,
26                     addTime = DateTime.Now,
27                 };
28                 //进行插入
29                 oc.BllSession.IStudentInfoBLL.AddNo(stuInfo);
30                 oc.BllSession.IStudent_PhotoBLL.AddNo(stu_Photo);
31                 //提交事务
32                 int result = oc.BllSession.IStudentInfoBLL.SaveChange();
33                 if (result > 0)
34                 {
35                     return Content("ok");
36                 }
37                 else
38                 {
39                     return Content("error");
40                 }
41             }
42             catch (Exception ex)
43             {
44                 Common.Log.LogHelper.Info(ex.Message);
45                 return Content("");  //只为了凑返回值，没有实际用处
46             }
47 
48         }
49         #endregion

View Code

二丶删除

 1 #region 06-删除操作
 2         /// <summary>
 3         /// 06-删除操作
 4         /// </summary>
 5         /// <param name="idsStr">id字符串</param>
 6         /// <returns></returns>
 7         public ActionResult DelExcute(string idsStr)
 8         {
 9             try
10             {
11                 //进行字符串拆分
12                 string[] str = idsStr.Split(new char[] { ',' });
13                 foreach (var item in str)
14                 {   //根据id查找对应行
15                     var stu_Info = oc.BllSession.IStudentInfoBLL.Entities.Where(a => a.id == item).FirstOrDefault();
16                     var stu_Img = oc.BllSession.IStudent_PhotoBLL.Entities.Where(a => a.id == item).FirstOrDefault();
17                     //进行删除
18                     oc.BllSession.IStudentInfoBLL.DelNo(stu_Info);
19                     oc.BllSession.IStudent_PhotoBLL.DelNo(stu_Img);
20                 }
21                 //提交事务
22                 int result = oc.BllSession.IStudentInfoBLL.SaveChange();
23                 if (result > 0)
24                 {
25                     return Content("ok");
26                 }
27                 else
28                 {
29                     return Content("error");
30                 }
31             }
32             catch (Exception ex)
33             {
34                 Common.Log.LogHelper.Info(ex.Message);
35                 return Content("");  //只为了凑返回值，没有实际用处
36             }
37         }
38         #endregion

View Code

三丶修改

 1 #region 07-修改操作
 2         /// <summary>
 3         /// 07-修改操作
 4         /// </summary>
 5         /// <param name="studentInfo">学生表查询信息</param>
 6         /// <param name="student_Photo">学生图片信息</param>
 7         /// <returns></returns>
 8         public ActionResult UpdateExcute(StudentInfo studentInfo, Student_Photo student_Photo)
 9         {
10             try
11             {
12                 //根据id号查询
13                 var stu_Info = oc.BllSession.IStudentInfoBLL.Entities.Where(a => a.id == studentInfo.id).FirstOrDefault();
14                 var stu_Img = oc.BllSession.IStudent_PhotoBLL.Entities.Where(a => a.id == studentInfo.id).FirstOrDefault();
15                 //为学生信息赋值
16                 stu_Info.name = studentInfo.name;
17                 stu_Info.sex = studentInfo.sex;
18                 stu_Info.age = studentInfo.age;
19                 stu_Info.stuAddTime = DateTime.Now;
20 
21                 stu_Img.photoUrl = student_Photo.photoUrl;
22                 stu_Img.roomNumber = student_Photo.roomNumber;
23                 stu_Img.addTime = DateTime.Now;
24                 //进行修改
25                 oc.BllSession.IStudentInfoBLL.ModifyNo(stu_Info);
26                 oc.BllSession.IStudent_PhotoBLL.ModifyNo(stu_Img);
27                 //提交事务
28                 int result = oc.BllSession.IStudentInfoBLL.SaveChange();
29                 if (result > 0)
30                 {
31                     return Content("ok");
32                 }
33                 else
34                 {
35                     return Content("error");
36                 }
37             }
38             catch (Exception ex)
39             {
40                 Common.Log.LogHelper.Info(ex.Message);
41                 return Content("");  //只为了凑返回值，没有实际用处
42             }
43         }
44         #endregion

View Code

四丶查询

 1 #region 04-多条件查询操作
 2         /// <summary>
 3         /// 04-多条件查询操作
 4         /// </summary>
 5         /// <param name="studentInfo">用来接收用户信息（涵盖多条件）</param>
 6         /// <param name="student_Photo">用来接收用户信息（涵盖多条件）</param>
 7         /// <param name="rows">行数</param>
 8         /// <param name="page">页码</param>
 9         /// <param name="dateStart">起始时间</param>
10         /// <param name="dateEnd">结束时间</param>
11         /// <returns></returns>
12         public ActionResult StuList(StudentInfo studentInfo, Student_Photo student_Photo, int rows, int page, string dateStart, string dateEnd)
13         {
14             try
15             {
16                 //数据源
17                 var stu_Info = oc.BllSession.IStudentInfoBLL.Entities;
18                 var stu_Img = oc.BllSession.IStudent_PhotoBLL.Entities;
19 
20                 //下面开始进行过滤查询
21                 //1.根据学生姓名查询
22                 if (!String.IsNullOrEmpty(studentInfo.name))
23                 {
24                     stu_Info = stu_Info.Where(a => a.name.Contains(studentInfo.name));
25                 }
26                 //2.根据学生性别查询
27                 if (!String.IsNullOrEmpty(studentInfo.sex))
28                 {
29                     stu_Info = stu_Info.Where(a => a.sex == studentInfo.sex);
30                 }
31                 //3.对时间进行排序
32                 if (!String.IsNullOrEmpty(dateStart))
33                 {
34                     DateTime dateS = Convert.ToDateTime(dateStart);//开始时间
35                     if (dateS != DateTime.MinValue)
36                     {
37                         stu_Info = stu_Info.Where(a => a.stuAddTime > dateS);
38                     }
39                 }
40                 if (!String.IsNullOrEmpty(dateEnd))
41                 {
42                     DateTime dateE = Convert.ToDateTime(dateEnd);//开始时间
43                     if (dateE != DateTime.MinValue)
44                     {
45                         stu_Info = stu_Info.Where(a => a.stuAddTime < dateE);
46                     }
47                 }
48                 //4.根据学生宿舍号进行查询
49                 if (!String.IsNullOrEmpty(student_Photo.roomNumber))
50                 {
51                     stu_Img = stu_Img.Where(a => a.roomNumber.Contains(student_Photo.roomNumber));
52                 }
53                 //连接查询
54                 var StuList = (from a in stu_Info.ToList()
55                                join b in stu_Img.ToList()
56                                on a.id equals b.id
57                                select new StuInfoAndImg
58                                {
59                                    id = a.id,
60                                    name = a.name,
61                                    sex = a.sex,
62                                    age = a.age,
63                                    stuAddTime = a.stuAddTime,
64                                    delFlag = a.delFlag,
65                                    pId = b.pId,
66                                    photoUrl = b.photoUrl,
67                                    roomNumber = b.roomNumber,
68                                    addTime = b.addTime,
69                                    delFlag1 = b.delFlag,
70                                }).OrderByDescending(u => u.stuAddTime);
71 
72                 var json = new
73                 {
74                     total = StuList.Count(),
75                     rows = StuList.Skip(rows * (page - 1)).Take(rows).ToList(),
76                 };
77                 return Json(json);
78             }
79             catch (Exception ex)
80             {
81                 Common.Log.LogHelper.Info(ex.Message);
82                 return Content("");  //只为了凑返回值，没有实际用处
83             }
84         }
85         #endregion

View Code

五丶附加

 1 #region 08-上传图片
 2         /// <summary>
 3         /// 08-上传图片
 4         /// </summary>
 5         /// <returns></returns>
 6         public ActionResult Upload()
 7         {
 8             try
 9             {
10                 if (Request.Files.Count == 0)
11                 {
12                     return PackagingAjaxmsg(new AjaxMsgModel { BackUrl = null, Data = null, Msg = "未找到要上传的图片", Statu = AjaxStatu.err });
13                 }
14                 else
15                 {
16                     //得到上传的图片
17                     var file = Request.Files[0];
18                     //要保存的文件路径
19                     var path = Path.Combine(Server.MapPath(Request.ApplicationPath), "Upload", "Image");
20                     if (!Directory.Exists(path))
21                     {
22                         Directory.CreateDirectory(path);
23                     }
24                     //要保存的文件名称
25                     string fileName = string.Format("{0}_{1}{2}", oc.CurrentUser.uId, DateTime.Now.ToString("yyyyMMddHHmmss"), Path.GetExtension(file.FileName));
26                     //保存文件到指定的目录
27                     file.SaveAs(Path.Combine(path, fileName));
28                     //上传之后图片的相对路径
29                     string relativePath = Path.Combine(Request.ApplicationPath, "Upload", "Image", fileName);
30 
31                     return PackagingAjaxmsg(new AjaxMsgModel { BackUrl = relativePath, Data = null, Msg = "上传成功", Statu = AjaxStatu.ok });
32                 }
33             }
34             catch (Exception ex)
35             {
36                 Common.Log.LogHelper.Info(ex.Message);
37                 return PackagingAjaxmsg(new AjaxMsgModel { BackUrl = null, Data = null, Msg = "图片上传失败", Statu = AjaxStatu.err });
38             }
39         }
40         #endregion

View Code

$("#j_btn1").uploadify({
            buttonText: '上传图片',
            height: 20,
             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);
            }
        })

作者：chenze
出处：https://www.cnblogs.com/chenze-Index/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
如果文中有什么错误，欢迎指出。以免更多的人被误导。

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原文地址：https://www.cnblogs.com/chenze-Index/p/9272726.html