实体框架SaveChanges不保存数据 [英] Entity Framework SaveChanges does not save data

问题描述

using (var db = new dbEntities())
{
    var dbUser = (from u in db.Users
                  where u.Id == Id
                  select u).First();

    dbUser.LastName = LastName;
    dbUser.FirstName = FirstName;
    dbUser.GroupId  = GroupId;
    dbUser.VoicesCount = VoicesCount;

    db.SaveChanges();
 }

这不会保存对数据库的任何更改。但是也不例外。为什么？

This does not save any changes to the database. But there are no exceptions, either. Why?

UPD：好的，我也在SQL Server CE上尝试过，没有任何变化。它不会保存更改的数据。

UPD: Ok, I tried it also for SQL Server CE and nothing changes. It doesn't save the changed data.

推荐答案

在bin / debug文件夹中查找数据库副本，它将拥有更改的数据，因为您要在数据库中包含应用程序的内容

Look in you bin/debug folder for a copy of the database, it will have the changed data, as you are including the database a content with your app

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