同时处理来自两个不同服务器的两个实体上下文

Question

在我的项目中，我有两个独立的服务器，具有独立的实体上下文，首先我从一个服务器获取数据，并通过以下代码将其保存到列表中：

BarForooEntities1 bfe = new BarForooEntities1();
SaleHistory sh = new SaleHistory();
RadifsSendCenter rs = new RadifsSendCenter();
BaskoolEntities be = new BaskoolEntities();
var q = (from d in bfe.RadifsSendCenter
    where d.Daryaft == true
    orderby d.id_rec
    select d).ToList();

然后我使用以下代码将该列表保存到另一个服务器数据库：

foreach (var v in q)
        {
            sh.id_rec = v.id_rec;
            sh.Radifkolsal = v.Radifkolsal;
            sh.Dates = v.Dates;
            sh.DateErsal = v.DateErsal;
            sh.TimeErsal = v.TimeErsal;
            sh.Karkhane = v.Karkhane;
            sh.Namekala = v.Namekala;
            sh.Vazn = v.Vazn;
            sh.Bandal = v.Bandal;
            sh.Dobaskul = v.Dobaskul;
            sh.OldYear = v.OldYear;
            sh.Sal = v.Sal;
            sh.del = v.del;
            sh.edit = v.edit;
            sh.Daryaft = v.Daryaft;
            sh.Shobe = v.Shobe;
            sh.Greid = v.Greid;
            sh.TedadBas = v.TedadBas;
            sh.Rahgiry = v.Rahgiry;
            sh.Tozih = v.Tozih;
            sh.NoeShemsh = v.NoeShemsh;
            sh.Metrazh = v.Metrazh;
            sh.Keyfiat = v.Keyfiat;
            sh.Address = v.Address;
            sh.City = v.City;
            sh.Karbar = v.Karbar;
            sh.CodeKala = v.CodeKala;
            sh.CodeGoruh = v.CodeGoruh;
            sh.CodeKG = v.CodeKG;
            sh.CodeGreid = v.CodeGreid;
            sh.Tel = v.Tel;
            sh.ShenaseMeli = v.ShenaseMeli;
            sh.Sefaresh = v.Sefaresh;
            sh.Tolid = v.Tolid;
            sh.Shenase = v.Shenase;
            var u = (from bu in be.BarbariUsers
                where bu.UserName == Login.username
                select bu).FirstOrDefault();
            sh.UserID = u.UserID;
            sh.ReceiveUser = Login.username;
            sh.ReceiveDateTime = DateTime.Now;
            be.SaleHistory.Add(sh);
            rs.Daryaft = false;
        }
be.SaveChanges();
bfe.SaveChanges();
MessageBox.Show("Done!");

当我运行我的项目时，一切都正常，但只有一行列表被添加到第二个列表中，并且更新第一个数据库值（rs.Daryaft=false；）不会改变任何事情。我知道如果我移动（be.SaveChanges（）；）和（bfe.SaveChanges（）；）在foreach循环中，只有第一个循环需要很长时间，第二个循环没有任何效果。也许我走错了路。有什么建议或其他解决方案可以解决这个问题吗？

Answer 1

Finlay我解决了我自己的问题。这是经过编辑的代码，可能对某人有用：

 BaskoolEntities be = new BaskoolEntities();
 BarForooEntities1 bfe = new BarForooEntities1();
 var q = (from d in bfe.RadifsSendCenter
     where d.id_rec > last
     orderby d.id_rec
     select new
               {d.id_rec,d.Radifkolsal,d.Namekala,d.Vazn,d.Bandal,d.Greid,d.TedadBas,d.Tozih,d.NoeShemsh,d.Metrazh,d.Keyfiat,d.Address,d.City,d.Tel,d.ShenaseMeli,d.Sefaresh,d.Tolid,d.Shenase
                     }).ToList();
        {
 foreach (var v in q)
            {
                RadifsSendCenter s = new RadifsSendCenter();
                SaleHistory sh = new SaleHistory();
                sh.id_rec = v.id_rec;
                sh.Radifkolsal = v.Radifkolsal;
                sh.Namekala = v.Namekala;
                sh.Vazn = v.Vazn;
                sh.Bandal = v.Bandal;
                sh.Greid = v.Greid;
                sh.TedadBas = v.TedadBas;
                sh.Tozih = v.Tozih;
                sh.NoeShemsh = v.NoeShemsh;
                sh.Metrazh = v.Metrazh;
                sh.Keyfiat = v.Keyfiat;
                sh.Address = v.Address;
                sh.City = v.City;
                sh.Tel = v.Tel;
                sh.ShenaseMeli = v.ShenaseMeli;
                sh.Sefaresh = v.Sefaresh;
                sh.Tolid = v.Tolid;
                sh.Shenase = v.Shenase;
                var u = (from bu in be.BarbariUsers
                    where bu.UserName == Login.username
                    select bu).FirstOrDefault();
                sh.UserID = u.UserID;
                sh.ReceiveUser = Login.username;
                sh.ReceiveDateTime = DateTime.Now;
                var b= (from h in bfe.RadifsSendCenter
                    where h.id_rec == q.id_rec
                    select h).FirstOrDefault();
                b.Daryaft = false;
                be.SaleHistory.Add(sh);
            }
    be.SaveChanges();
    bfe.SaveChanges();
    }
    MessageBox.Show("Done!");
    }