2015-07-13 58 views
0

因此,我使用UnitOfWork將對象保存到數據庫中。這完美地工作。但是,當我嘗試編輯對象並再次保存時,不會將更改寫入數據庫。UnitOfWork CommitChanges not editing DB Row

下面是用於保存的片段:

this.uow = new UnitOfWork(); 
this.job = new Job(uow); 

using (UnitOfWork u = new UnitOfWork()) 
      { 
       job.Truck = cboTrucks.SelectedItem.ToString(); 
       job.Driver = cboDriver.SelectedItem.ToString(); 
       job.Load = txtLoad.Text; 
       job.Comment = txtComment.Text; 
       job.FileOk = chkFile.Checked; 
       job.Notified = chkNotified.Checked; 
       job.JobDate = dteJobDate.DateTime; 

       u.CommitChanges(); 
      } 
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爲什麼要創建Job對象w ith一個UnitOfWork,但然後嘗試將其保存在不同的UnitOfWork下?這似乎很容易導致SessionMixingException。 https://documentation.devexpress.com/#corelibraries/clsDevExpressXpoExceptionsSessionMixingExceptiontopic – Brendon

+0

@Brendon我同意你的看法。我也注意到我所做的是錯誤的。當我解決我的問題時,我很快就擺脫了它。 –

回答

0

我終於得到它的工作,這是我改變了:

BEFORE:

this.uow = new UnitOfWork(); 
this.job = new Job(uow); 

AFTER:

this.uow = new UnitOfWork(); 
this.job = new XPQuery<TIS.Model.Internal.Job>(uow).Where(q => q.Id == job.Id).FirstOrDefault();