.net MVC 解决更新冲突办法

public abstract class dbBase
    {

  public virtual void SubmitChanges()
        {
            ChangeSet cSet = db.GetChangeSet();
            if (cSet.Inserts.Count > 0
                || cSet.Updates.Count > 0
                || cSet.Deletes.Count > 0)
            {
                try
                {
                    db.SubmitChanges(System.Data.Linq.ConflictMode.ContinueOnConflict);
                    //db.SubmitChanges();
                }
                catch (System.Data.Linq.ChangeConflictException ex)
                {
                    foreach (System.Data.Linq.ObjectChangeConflict occ in db.ChangeConflicts)
                    {

                        // 使用当前数据库中的值，覆盖Linq缓存中实体对象的值 
                        occ.Resolve(System.Data.Linq.RefreshMode.OverwriteCurrentValues);

                        // 使用Linq缓存中实体对象的值，覆盖当前数据库中的值 
                        occ.Resolve(System.Data.Linq.RefreshMode.KeepCurrentValues);

                        // 只更新实体对象中改变的字段的值，其他的保留不变 
                        occ.Resolve(System.Data.Linq.RefreshMode.KeepChanges);
                    }
                    db.SubmitChanges();
                }
             }
        }

}