Question

I am accessing my database through ADO.NET Entity framework in MVC 3 Application.

I am updating my database through Stored Procedure.

But the changes are not reflected at run time.I mean to say i am able to see the changes only after restarting it.

What is the reason for the problem and How can i avoid it ?
I am using Repository pattern So at repository My code look like this

Ther Is One Function Which Save Changes

public void SaveNewAnswer(AnswerViewModel answer,string user)
{

        SurveyAdminDBEntities _entities = new SurveyAdminDBEntities();
        _entities.usp_SaveNewAnswer(answer.QuestionId, answer.AnswerName, answer.AnswerText, answer.AnswerOrder, answer.Status, user);
        _entities.SaveChanges();

}

Data Retreival Code

public IEnumerableGetMultipleChoiceQuestions(string questionId)
{

        SurveyAdminDBEntities _entities = new SurveyAdminDBEntities();
        _entities.AcceptAllChanges();
        _entities.SaveChanges();
        return _entities.usp_GetMultipleChoiceQuestions(Int32.Parse(questionId));
    }

But Changes are not reflected till the time i don’t clode the session of the browser and run it again .

Please help !

Thank You In advance

Answer 1

Are you calling context.SaveChanges() on your Entities (DbContext/ObjectContext) object? Are you using a transaction that you haven’t committed?

If you have an uncommitted transaction in your sproc, you can try creating your own entity transaction and seeing if committing your transaction will commit the nested transaction as well. The problem is that calling SaveChanges() automatically begins and commits a transaction, so this may not be any different than that.

I would also call _entities.AcceptAllChanges() in your save operation.

public void SaveNewAnswer(AnswerViewModel answer,string user) 
{
    SurveyAdminDBEntities _entities = new SurveyAdminDBEntities();
    _entities.Connection.Open();
    System.Data.Common.DbTransaction tran = _entities.Connection.BeginTransaction();        

    try
    {
        _entities.usp_SaveNewAnswer(answer.QuestionId, answer.AnswerName, answer.AnswerText, answer.AnswerOrder, answer.Status, user);
        _entities.SaveChanges(); // automatically uses the open transaction instead of a new one
        tran.Commit();
    }
    catch
    {
        tran.Rollback();
    }
    finally
    {
        if (_entities.Connection.State == System.Data.ConnectionState.Open)
                _entities.Connection.Close();

        _entities.AcceptAllChanges();
    }
}