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  • 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

    code

    1 public IList<UserInfo> userInfoList { get; set; }
2         DemoEntities demoEntities = new DemoEntities();//创建EF上下文
3         public ActionResult Index()
4         {
5             userInfoList = demoEntities.Set<UserInfo>().ToList();
6             ViewBag.userInfoList = userInfoList;
7             return View();
8         }
    View Code

    view

     1 @{
 2     Layout = null;
 3 }
 4 @using MVCCRUDAPI.Models;
 5 <!DOCTYPE html>
 6 
 7 <html>
 8 <head>
 9     <meta name="viewport" content="width=device-width" />
10     <title>Index</title>
11 </head>
12 <body>
13     <table>
14         <tr><td>用户名</td><td>密码</td><td>年龄</td><td>邮箱</td><td>备注</td><td>添加时间</td><td>操作</td></tr>
15         @foreach (UserInfo userInfo in ViewBag.userInfoList)
16         {
17             <tr><td>@userInfo.UserName</td><td>@userInfo.UserPwd</td><td>@userInfo.Age<td>@userInfo.Email</td><td>@userInfo.Remark</td><td>@userInfo.RegTime</td><td><a href="/UserInfo/Edit/@userInfo.Id">编辑</a> <a href="javascript:void(0)" onclick="del(@userInfo.Id)">删除</a></td></tr>
18         }
19     </table>
20 </body>
21 </html>
    View Code

    数据显示

    3、添加数据

    code

     1 public ActionResult Add()
 2         {
 3             return View();
 4         }
 5         [HttpPost]
 6         public ActionResult Add(UserInfo userInfo)
 7         {
 8             if (!ModelState.IsValid)
 9             {
10                 return Content("error");
11             }
12             userInfo.RegTime = DateTime.Now;
13             demoEntities.UserInfo.Add(userInfo);
14             demoEntities.SaveChanges();
15             return Content("ok");
16         }
    View Code

    view

     1 @{
 2     Layout = null;
 3 }
 4 @model MVCCRUDAPI.Models.UserInfo
 5 <!DOCTYPE html>
 6 
 7 <html>
 8 <head>
 9     <meta name="viewport" content="width=device-width" />
10     <title>添加</title>
11     <script src="~/Scripts/jquery-1.8.2.js"></script>
12     <script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>
13     <script src="~/Scripts/jquery.validate.min.js"></script>
14     <script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
15     <script>
16         function success(data) {
17             if (data == "ok") {
18                 alert("添加成功");
19                 window.location.href = "/UserInfo/Index";
20             }
21             else if (data == "error") {
22                 alert("参数提交失败");
23             }
24         }
25     </script>
26 </head>
27 <body>
28     <div>
29         @using (Ajax.BeginForm("add", "UserInfo", new AjaxOptions { HttpMethod = "post", OnSuccess = "success" }))
30         {
31             <div>
32                 @Html.LabelFor(u => u.UserName)
33             </div>
34             <div>
35                 @Html.TextBoxFor(u => u.UserName)
36                 
37             </div>
38             <div>
39                 @Html.LabelFor(u => u.UserPwd)
40             </div>
41             <div>
42                 @Html.PasswordFor(u => u.UserPwd)
43                 
44             </div>
45             <div>
46                 @Html.LabelFor(u => u.Email)
47             </div>
48             <div>
49                 @Html.TextBoxFor(u => u.Email)
50                 
51             </div>
52             <div>
53                 @Html.LabelFor(u => u.Age)
54             </div>
55             <div>
56                 @Html.TextBoxFor(u => u.Age)
57                 
58             </div>
59             <div>
60                 @Html.LabelFor(u => u.Remark)
61             </div>
62             <div>
63                 @Html.TextAreaFor(u => u.Remark)
64                 
65             </div>
66             <br />
67             <input type="submit" value="添加" />  <a href="/UserInfo/Index">返回</a>
68         }
69     </div>
70 </body>
71 </html>
    View Code

    4、更新数据

    code

     1 UserInfo userInfo = new UserInfo();
 2 public ActionResult Edit(int id)
 3         {
 4             userInfo = demoEntities.Set<UserInfo>().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         }
    View Code

    veiw

     1 @model MVCCRUDAPI.Models.UserInfo
 2 
 3 @{
 4     Layout = null;
 5 }
 6 
 7 <!DOCTYPE html>
 8 
 9 <html>
10 <head>
11     <meta name="viewport" content="width=device-width" />
12     <title>编辑</title>
13 </head>
14 <body>
15     <script src="~/Scripts/jquery-1.8.2.js"></script>
16     <script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>
17     <script src="~/Scripts/jquery.validate.min.js"></script>
18     <script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
19     <script>
20         function success(data) {
21             if (data == "ok") {
22                 alert("编辑成功");
23                 window.location.href = "/UserInfo/Index";
24             }
25             else if (data == "error") {
26                 alert("参数提交失败");
27             }
28         }
29     </script>
30     @using (Ajax.BeginForm("Edit", "UserInfo", new AjaxOptions { OnSuccess = "success", HttpMethod = "post" }))
31     {
32         @Html.HiddenFor(model => model.Id)
33 
34         <div>
35             @Html.LabelFor(model => model.UserName)
36         </div>
37         <div>
38             @Html.EditorFor(model => model.UserName)
39             
40         </div>
41         <div>
42             @Html.LabelFor(model => model.UserPwd)
43         </div>
44         <div>
45             @Html.EditorFor(model => model.UserPwd)
46             
47         </div>
48         <div>
49             @Html.LabelFor(model => model.Age)
50         </div>
51         <div>
52             @Html.EditorFor(model => model.Age)
53            
54         </div>
55         <div>
56             @Html.LabelFor(model => model.Email)
57         </div>
58         <div>
59             @Html.EditorFor(model => model.Email)
60             
61         </div>
62         <div>
63             @Html.LabelFor(model => model.Remark)
64         </div>
65         <div>
66             @Html.TextAreaFor(u => u.Remark)
67             
68         </div>
69         @Html.HiddenFor(model => model.RegTime)
70         <p>
71             <input type="submit" value="保存" /> <a href="/UserInfo/Index">返回</a>
72         </p>
73     }
74 </body>
75 </html>
    View Code

    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 Code

    view 在index页面加入下面的js代码即可

     1 <script>
 2         function del(id) {
 3             if (confirm("确定删除吗?")) {
 4                 $.post("/UserInfo/Delete/" + id, null,
 5                     function success(data) {
 6                         if (data == "ok") {
 7                             alert("删除成功");
 8                             window.location.href = "/UserInfo/Index";
 9                         }
10                         else {
11                             alert("参数错误");
12                         }
13                     })
14             }
15         }
16     </script>
    View Code
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  • 原文地址：https://www.cnblogs.com/dx5800/p/5575528.html
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