你的位置:首页 > 软件开发 > ASP.net > MVC简单实例

MVC简单实例

发布时间:2016-03-13 21:00:05
using System;using System.Collections.Generic;using System.Linq;using System.Text.RegularExpressions;using System.Web;using System.Web.Mvc;u ...

MVC简单实例

MVC简单实例

MVC简单实例

MVC简单实例

 

MVC简单实例MVC简单实例
using System;using System.Collections.Generic;using System.Linq;using System.Text.RegularExpressions;using System.Web;using System.Web.Mvc;using WebApplication1.Models;namespace WebApplication1.Controllers{  public class LeaveMsgController:Controller  {    //GET:/LeaveMsg/    public ActionResult Index()    {      //Controllers向视图传值      //原理:先存数据然后再在视图你面取出来      get='_blank'>string s = "hello!!";      ViewData["aa"] = s;            BBSDataContext bbs = new BBSDataContext();      List<student> v = (from m in bbs.student          select m).ToList();      ViewData["list"] = v;      return View();    }    //删除    public ActionResult Delete()    {      //RouterData 可以获取路由上的数据      string id = RouteData.Values["id"].ToString();      //可以将一段文字返回给浏览器      //return view() 是把当前这个Action对应的视图返回给浏览器      BBSDataContext dc = new BBSDataContext();      var v = from d in dc.student          where d.stuID == int.Parse(id)          select d;      if (v.Count()>0)      {        //删除        try        {          dc.student.DeleteOnSubmit(v.First());          dc.SubmitChanges();          //成功          //TempData临时数据,为下一次请求服务,在下一次请求完毕,数据清除          //本质是session存放数据          TempData["msg"] = "删除成功";        }        catch (Exception)        {          //失败          TempData["msg"] = "删除失败!!!";        }              }      else      {        //没有对应的数据        TempData["msg"] = "没有找到对应的数据!!!";      }      return RedirectToAction("Index");    }    //新增    public ActionResult Insert()    {      return View();    }    //数据验证    public void CheckData(student s)    {      //用户名不能为空      if (s.stuName=="")      {        ModelState.AddModelError("stuName", "用户名不能为空");      }      //性别内容长度不能为空且不能大于2个字符      if (s.stuNo==""&&s.stuNo.Length<2)      {        ModelState.AddModelError("stuName", "用户名不能为空或字符数大于2");      }      //正则表达式      //bool b= Regex.IsMatch(s.stuID.ToString(), "^\\{6}$");//C#正则          }    //提交新增操作    public ActionResult InsertOK()    {      //数据验证            BBSDataContext dc = new BBSDataContext();      student s = new student();      s.stuName = Request["stuName"];      s.stuID = int.Parse(Request["stuNo"]);      s.sex = Request["sex"];      s.remark = Request["remark"];      CheckData(s);      if (!ModelState.IsValid)//验证不通过      {        ViewData["stuName"] = s.stuName;        ViewData["stuNo"] = s.stuNo;        ViewData["sex"] = s.sex;        return View("Insert");      }      try      {        dc.student.InsertOnSubmit(s);        dc.SubmitChanges();        TempData["msg"] = "新增成功!!!";        return RedirectToAction("Index");      }      catch (Exception)      {        TempData["msg"] = "新增失败";        return RedirectToAction("Insert");      }    }    //编辑跳转    public ActionResult Edit()    {      string id = RouteData.Values["id"].ToString();      ViewData["id"] = id;      //找id对应的数据      BBSDataContext dc = new BBSDataContext();      var v = from d in dc.student          where d.stuID == int.Parse(id)          select d;      if (v.Count()>0)      {        var d = v.First();        ViewData["stuName"] = d.stuName;        ViewData["stuNo"] = d.stuNo;        ViewData["sex"] = d.sex;        ViewData["remark"] = d.remark;        return View();      }      else      {        TempData["msg"] = "没有对应的数据";        return View();      }    }    //修改    public ActionResult Update()    {      string id = Request["id"];      BBSDataContext dc = new BBSDataContext();      var v = from d in dc.student          where d.stuID == int.Parse(id)          select d;      if (v.Count()>0)      {        var m = v.First();        m.stuName = Request["stuName"];        m.stuNo = Request["stuNo"];        m.sex = Request["sex"];        CheckData(m);        if (!ModelState.IsValid)        {          return View("Edit");        }        try        {          dc.SubmitChanges();//提交修改          TempData["msg"] = "修改成功";          return RedirectToAction("Index");        }        catch (Exception)        {          TempData["msg"] = "修改失败!";          return RedirectToAction("Edit",new { id=id});        }              }      else      {        //没有此数据        TempData["msg"] = "提交数据之前数据被其他用户已删除!!";        return RedirectToAction("Index");      }    }  }}

原标题:MVC简单实例

关键词:mvc

mvc
*特别声明:以上内容来自于网络收集,著作权属原作者所有,如有侵权,请联系我们: admin#shaoqun.com (#换成@)。