LINQTOSQL作为底层ORM框架后,我们的数据基类就变成了这个样子

   1:  namespace Data

   2:  {

   3:      /// <summary>

   4:      /// OA数据库基类

   5:      /// </summary>

   6:      public abstract class OARepositoryBase

   7:      {

   8:          protected Data.OA.LinqOADataContext _db = 

               (Data.OA.LinqOADataContext)Data.DataContextFactory.Intance("OA");

   9:   

  10:          /// <summary>

  11:          /// 虚方法，子类可以根据自己的逻辑去复写这个方法

  12:          /// </summary>

  13:          public virtual void SubmitChanges()

  14:          {

  15:              ChangeSet chs = _db.GetChangeSet();

  16:              if (chs.Deletes.Count > 0 

                      || chs.Inserts.Count > 0 

                      || chs.Updates.Count > 0)

  17:                  _db.SubmitChanges();

  18:          }

  19:      }

  20:   

  21:   

  22:  }