MVC简单的增删改查

MVC简单的增删改查

最近的学习了一下mvc，现在做一个mvc的CRUD例子。

1、创建实体模型

2、创建一个UserInfo的控制器

 

3、查询数据

 public IList userInfoList { get; set; }
         DemoEntities demoEntities = new DemoEntities();//创建EF上下文
         public ActionResult Index()
         {
             userInfoList = demoEntities.Set().ToList();
             ViewBag.userInfoList = userInfoList;
             return View();
         }

view

  @{
      Layout = null;
  }
  @using MVCCRUDAPI.Models;
  
  
  
  
     
     
 
 
     
         @foreach (UserInfo userInfo in ViewBag.userInfoList)
         {
             
         }
     

         
用户名
密码
年龄
邮箱
备注
添加时间
操作
@userInfo.UserName
@userInfo.UserPwd
@userInfo.Age
@userInfo.Email
@userInfo.Remark
@userInfo.RegTime
编辑 删除
 
 

数据显示

3、添加数据

code

  public ActionResult Add()
         {
             return View();
         }
         [HttpPost]
         public ActionResult Add(UserInfo userInfo)
         {
             if (!ModelState.IsValid)
             {
                 return Content("error");
             }
             userInfo.RegTime = DateTime.Now;
             demoEntities.UserInfo.Add(userInfo);
             demoEntities.SaveChanges();
             return Content("ok");
        }

view

 

 @{
     Layout = null;
 }
 @model MVCCRUDAPI.Models.UserInfo
 
 
 
 
     
     
     
     
     
     
     
 
 
     

         @using (Ajax.BeginForm("add", "UserInfo", new AjaxOptions { HttpMethod = "post", OnSuccess = "success" }))
         {
             

                 @Html.LabelFor(u => u.UserName)
             
             

                 @Html.TextBoxFor(u => u.UserName)
                 
             
             

                 @Html.LabelFor(u => u.UserPwd)
             
             

                 @Html.PasswordFor(u => u.UserPwd)
                 
             
             

                 @Html.LabelFor(u => u.Email)
             
             

                 @Html.TextBoxFor(u => u.Email)
                 
             
             

                 @Html.LabelFor(u => u.Age)
             
             

                 @Html.TextBoxFor(u => u.Age)
                 
            
             

                 @Html.LabelFor(u => u.Remark)
             
             

                 @Html.TextAreaFor(u => u.Remark)
                 
             
             

               返回
         }
     
 
 

4、更新数据

code

 1 UserInfo userInfo = new UserInfo();
 2 public ActionResult Edit(int id)
 3         {
 4             userInfo = demoEntities.Set().Where(u => u.Id == id).FirstOrDefault();
 5             return View(userInfo);
 6         }
 7         [HttpPost]
 8         public ActionResult Edit(UserInfo userInfo)
 9         {
10             if (!ModelState.IsValid)
11             {
12                 return Content("error");
13             }
14             demoEntities.UserInfo.Attach(userInfo);//对象添加到EF管理容器中
15             demoEntities.Entry(userInfo).State = EntityState.Modified;
16             demoEntities.SaveChanges();
17             return Content("ok");
18         }

veiw

 1 @model MVCCRUDAPI.Models.UserInfo
 2 
 3 @{
 4     Layout = null;
 5 }
 6 
 7 
 8 
 9 
10 
11     
12     
13 
14 
15     
16     
17     
18     
19     
30     @using (Ajax.BeginForm("Edit", "UserInfo", new AjaxOptions { OnSuccess = "success", HttpMethod = "post" }))
31     {
32         @Html.HiddenFor(model => model.Id)
33 
34         

35             @Html.LabelFor(model => model.UserName)
36         
37         

38             @Html.EditorFor(model => model.UserName)
39             
40         
41         

42             @Html.LabelFor(model => model.UserPwd)
43         
44         

45             @Html.EditorFor(model => model.UserPwd)
46             
47         
48         

49             @Html.LabelFor(model => model.Age)
50         
51         

52             @Html.EditorFor(model => model.Age)
53            
54         
55         

56             @Html.LabelFor(model => model.Email)
57         
58         

59             @Html.EditorFor(model => model.Email)
60             
61         
62         

63             @Html.LabelFor(model => model.Remark)
64         
65         

66             @Html.TextAreaFor(u => u.Remark)
67             
68         
69         @Html.HiddenFor(model => model.RegTime)
70         

71              返回
72         
73     }
74 
75 

5、删除数据

code

1 public ActionResult Delete(int id)
2         {
3             userInfo.Id = id;
4             demoEntities.UserInfo.Attach(userInfo);//对象添加到EF管理容器中
5             demoEntities.Entry(userInfo).State = EntityState.Deleted;
6             demoEntities.SaveChanges();
7             return Content("ok");
8         }

view 在index页面加入下面的js代码即可

 1