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web MVC程序开发增删改查参考代码。思路是面向对象思想，以及在HTML代码中嵌入C#代码

2015-07-07 16:31 746 查看

第一步：在Model中写好查询，删除，修改，添加方法，用sql_link类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace MvcApplication2.Models
{

public class InfoBf
{
private MydbDataContext _Context = new MydbDataContext();
//查询
public List<student> Select()
{
return _Context.student.ToList();
}
//查询出一条数据修改使用
public student Select(string sno)
{
var query = _Context.student.Where(p=>p.sno==sno);
if (query.Count()>0)
{
return query.First();
}
return null;
}
//添加
public void Insert(string sno,string sname,string ssex,DateTime sbirthdy,string @class)
{
student data = new student
{
sno = sno,
sname = sname,
ssex = ssex,
sbirthdy = sbirthdy,
@class = @class
};
_Context.student.InsertOnSubmit(data);
_Context.SubmitChanges();
}
//删除
public void Delete(string sno)
{
var query = _Context.student.Where(p=>p.sno==sno);
if (query.Count()>0)
{
student data = query.First();
_Context.student.DeleteOnSubmit(data);
_Context.SubmitChanges();
}
}
//修改
public void Update(string sno, string sname, string ssex, DateTime sbirthdy, string @class)
{
var query = _Context.student.Where(p => p.sno == sno);
if (query.Count()>0)
{
student data = query.First();
data.sno = sno;
data.sname = sname;
data.ssex = ssex;
data.sbirthdy = sbirthdy;
data.@class = @class;
_Context.SubmitChanges();
}
}
}
}

第二步：添加控制器，一个控制器控制一个视图

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MvcApplication2.Models;

namespace MvcApplication2.Controllers
{
public class HomeController : Controller
{
//
// GET: /Home/

public ActionResult Index()
{
ViewBag.Data = new InfoBf().Select();
return View();
}
//显示添加界面
public ActionResult Add()
{
return View();
}
public ActionResult Insert(string sno,string sname,string ssex,DateTime sbirthdy,string @class)
{
new InfoBf().Insert(sno,sname,ssex,sbirthdy,@class);
return RedirectToAction("Index");
}
//显示修改界面
public ActionResult Exit(string id)
{
student data=new InfoBf().Select(id);
ViewBag.Data = data;
return View();
}
//更新至数据库
public ActionResult Update(string sno,string sname,string ssex,DateTime sbirthdy,string @class)
{
new InfoBf().Update(sno,sname,ssex,sbirthdy,@class);
return RedirectToAction("Index");
}
//删除结束直接更新至数据库
public ActionResult Delete(string id)
{
new InfoBf().Delete(id);
return RedirectToAction("Index");
}
}
}

第三部：在每一个控制器下添加视图。

这是Index视图

@using MvcApplication2.Models;
@using MvcApplication2.Controllers；
@{
Layout = null;
}

<!DOCTYPE html>

<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
</head>
<style type="text/css">
.tbhead
{
background-color:navy;
text-align:center;
font-weight:bold;
}
.tbrow
{
background-color:#FFFFCC;
text-align:center;
}

</style>
<body>
<div>
<table width="100%" cellpadding="5" cellspacing="1" bgcolor="blue" border ="0">
<tr class="tbhead">
<td>学号</td>
<td>姓名</td>
<td>性别</td>
<td>年龄</td>
<td>班级</td>
<td>操作</td>
</tr>
@{
List<student> list=ViewBag.Data as List<student>;
foreach(student data in list)
{
<tr class="tbrow">
<td>@data.sno</td>
<td>@data.sname</td>
<td><img src="@("images/girl.png")"/></td>
<td>@data.sbirthdy</td>
<td>@(data.@class)</td>
<td>
<a href="/Home/Exit/@data.sno">修改</a>
<a onclick="return confirm('确认要删除 @data.sname 吗？')" href="/Home/Delete/@data.sno">删除</a>
</td>
</tr>
}
}
</table>
<a href="/Home/Add">添加人员</a>
</div>
</body>
</html>

这是添加视图

@using  MvcApplication2.Models;
@using  MvcApplication2.Controllers;@{
Layout = null;
}

<!DOCTYPE html>

<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Add</title>
</head>
<body>
<div>
<form id="f1" name="f1" action="/Home/Insert">
<h1> 添加人员</h1>
<div>

@*学号: <input name="sno" id="sno" type="text"/><br/>
姓名：<input name="sname" id="sname" type="text" /><br/>
性别：<input name="ssex" id="ssex" type="text"  /><br/>
年龄：<input name="sbirthdy" id="sbirthdy" type="text"  /><br/>
班级：<input name="class" id="class" type="text"  /><br/>*@

学号: <input name="sno" id="sno" type="text"/><br/>
姓名：<input name="sname" id="sname" type="text" /><br/>
性别：<input name="ssex" id="ssex" type="radio"value="男" checked="checked"/ >男<input name="ssex" id="ssex1" type="radio" value ="女" />女<br/>
年龄：<input name="sbirthdy" id="sbirthdy" type="text"/><br/>
班级：<input name="class" id="class" type="text"  /><br/>

<input id="Submit1" type="submit" value="更新" />

</div>
</form>
</div>
</body>
</html>

这是修改视图

@using  MvcApplication2.Models;
@using  MvcApplication2.Controllers;
@{
Layout = null;
}

<!DOCTYPE html>

<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Exit</title>
</head>
<body>
<div>
<form id="f1" name="f1" action="/Home/Update">
<h1> 修改人员</h1>
<div>
@{student data= ViewBag.Data as student;
if (data!=null)
{
<text>
学号: <input name="sno" id="sno" type="text"value="@data.sno" /><br/>
姓名：<input name="sname" id="sname" type="text"value="@data.sname" /><br/>
性别：<input name="ssex" id="ssex" type="text" value="@data.ssex" /><br/>
年龄：<input name="sbirthdy" id="sbirthdy" type="text" value="@data.sbirthdy" /><br/>
班级：<input name="class" id="class" type="text" value="@(data.@class)" /><br/>
<input id="Submit1" type="submit" value="更新" />
</text>
}
}
</div>
</form>
</div>
</body>
</html>

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