Asp.net mvc 4 MVC4中仅从表的1个字段中提取
我想从表Asp.net mvc 4 MVC4中仅从表的1个字段中提取,asp.net-mvc-4,Asp.net Mvc 4,我想从表bookinfo的字段available [HttpPost] public ActionResult issuebook(string type, string accessionno, string bookname, string issuedate, string duedate, string id) { tblIssuedbook issuebook = new tblIssuedbook(); issuebook.AccessionNo = accessio
bookinfo
的字段available
[HttpPost]
public ActionResult issuebook(string type, string accessionno, string bookname, string issuedate, string duedate, string id)
{
tblIssuedbook issuebook = new tblIssuedbook();
issuebook.AccessionNo = accessionno;
issuebook.Name = bookname;
issuebook.IssueDate = issuedate;
issuebook.DueDate = duedate;
issuebook.Type = type;
issuebook.MemberId = id;
db.tblIssuedbooks.Add(issuebook);
db.SaveChanges();
Bookinfo b = new Bookinfo();
return view();
}
我想当这些字段保存在数据库中时,根据
访问从另一个表中减去“1”
您可以发布您的EF上下文吗?我们需要更多信息来帮助您。您需要首先加载持久化条目,从中减去1,然后将其持久化回数据库。