//点击下载按钮后的操作
public ActionResult Download(string bookid)
{
bookid = "00000114";
string userid = "00000010";
//string userid = Request.Cookies["_userID"].Value;
IQueryable <DOWNLOAD> q = from d in db.DOWNLOAD
where d.READERID == userid && d.BOOKID == bookid
select d;
List <DOWNLOAD> list = q.ToList();
//表中已存在
if (list.Count != 0)
{
return(Content("<script>alert('正在下载');window.location.href='/books/Index';</script>"));
}
DOWNLOAD temp = new DOWNLOAD();
temp.BOOKID = bookid;
temp.READERID = userid;
db.DOWNLOAD.Add(temp);
//更新相关的下载量
foreach (var data in db.BOOK)
{
if (data.BOOKID == bookid)
{
data.DOWNLOADNUM++;
break;
}
}
//db.SaveChanges();
//Response.Write("<script>alter('下载成功');</script>");
return(Content("<script>alert('正在下载');window.location.href='/books/Index';</script>"));
}
public ActionResult DeleteConfirmed(string id)
{
DOWNLOAD dOWNLOAD = db.DOWNLOAD.Find(id);
db.DOWNLOAD.Remove(dOWNLOAD);
db.SaveChanges();
return(RedirectToAction("Index"));
}
public ActionResult Edit([Bind(Include = "READERID,BOOKID")] DOWNLOAD dOWNLOAD)
{
if (ModelState.IsValid)
{
db.Entry(dOWNLOAD).State = EntityState.Modified;
db.SaveChanges();
return(RedirectToAction("Index"));
}
return(View(dOWNLOAD));
}
public ActionResult Create([Bind(Include = "READERID,BOOKID")] DOWNLOAD dOWNLOAD)
{
if (ModelState.IsValid)
{
db.DOWNLOAD.Add(dOWNLOAD);
db.SaveChanges();
return(RedirectToAction("Index"));
}
return(View(dOWNLOAD));
}
// GET: DOWNLOADs/Edit/5
public ActionResult Edit(string id)
{
if (id == null)
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
DOWNLOAD dOWNLOAD = db.DOWNLOAD.Find(id);
if (dOWNLOAD == null)
{
return(HttpNotFound());
}
return(View(dOWNLOAD));
}