Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

.edmx and ADD DEFAULT

Posted on 2010-09-14
18
Medium Priority
?
360 Views
Last Modified: 2013-11-11
Hi experts, I am using linq entity framework for recording data, but I have a problem with the default values
ALTER TABLE [certified]. [Activity] ADD DEFAULT ('1 ') FOR [SituacionRegistro]
my question is, as I work on .edmx to take the default

in my column model .edmx  is not SituacionRegistro
0
Comment
Question by:enrique_aeo
  • 9
  • 9
18 Comments
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 33674455
Not sure of your question. Are you try to update/insert into the database a default value or are you trying to read from the database a null value and trying to assign a default into the model?
0
 

Author Comment

by:enrique_aeo
ID: 33674487
Hi, I'm trying to insert a record and the default value of SituacionRegistro column in the database is not working, always insert null value
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 33674582
Please post your code.
0
What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

 

Author Comment

by:enrique_aeo
ID: 33674720
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 33675878
The only thing that I can see is that you are defining this in the database

ALTER TABLE [certified]. [Activity] ADD DEFAULT ('1 ') FOR [SituacionRegistro]

the default is being set to '1 ' where the max chars is 1 try changing '1 ' to '1'
0
 

Author Comment

by:enrique_aeo
ID: 33675991
the code in the database is well
ALTER TABLE [certifica].[Actividad] ADD  DEFAULT ('1') FOR [SituacionRegistro]

I tried entering data with transact sql (insert into) and runs the default.

I assume that the error is in the LINQ
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 33676954
Are you sending the field SituacionRegistro in the insert?
0
 

Author Comment

by:enrique_aeo
ID: 33677003
he who does the recording is the same model with this method
 public Actividad CrearActividad(Actividad ActividadACrear)
        {
            db.AddToActividad(ActividadACrear);
            Grabar();
            return ActividadACrear;
        }

when I call this method, do not send SituacionRegistro
 actividad = new Actividad();
                    actividad.CodigoActividad = codigoActividad;
                    actividad.NombreActividad = txtNombreCurso.Text.Trim();
                    actividad.NombreSede = txtNombreSede.Text.Trim();
                    actividad.FechaInicio = txtFechaInicio.Text.Trim();
                    actividad.FechaFin = txtFechaFin.Text.Trim();
                    actividad.DirigidoA = txtDirigido.Text.Trim();
                    actividad.NombrePrograma = txtNombrePrograma.Text.Trim();
                    actividad.NumeroResolucion = txtNumeroResolucion.Text.Trim();
                    actividad.HorasLectivas = txtHorasLectivas.Text.Trim();
                    actividad.UsuarioCreacion = Session["userConnected"].ToString();
                    actividad.FechaCreacion = DateTime.Now;
                    repositorio.CrearActividad(actividad);
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 33677113
Try setting this in the above code.

actividad.SituacionRegistro = null;
0
 

Author Comment

by:enrique_aeo
ID: 33677411
I made the change, but the problem persists, ie does not insert the default value is defined in the database
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 33677535
Do you have a SQL Profiler to see what SQL query is being sent to the server?
0
 

Author Comment

by:enrique_aeo
ID: 33677827
NULL arrives, VIEW ATTACHED
traceSituacionRegistro.jpg
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 33683041
Hi enrique_aeo;

In doing some research on the net I have found that Default Values assigned at the server are not supported in EF. I have test this and it seems to be true on VS 2010 as well. The only way I have found to get around this is to set the EF Default Value for that column in the model. To do this you can do the following:

1. Open the EF designer.
2. On the table that you want to assign default values to, right click on the column name and select
     Properties from the context menu.
3. In the Properties window select the Default Value property and set the value in the text box to the right
    to the default value you wanted for that column.

That should do it.

Fernando
0
 

Author Comment

by:enrique_aeo
ID: 33683349
I made the change in 2 ways
1. property change in the model and kept the default value in the database
2. property change in the model and delete the default value in the database
In no case does
situacionRegistroEDM.jpg
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 33683547
I did my test using VS 2010, what version are you running?
0
 

Author Comment

by:enrique_aeo
ID: 33683561
vs 2008
this would be the problem?
0
 
LVL 64

Accepted Solution

by:
Fernando Soto earned 1000 total points
ID: 33684120
You may want to look at the ObjectContext.SavingChanges Event and check all the values that have default values and set them here.

ObjectContext.SavingChanges Event
http://msdn.microsoft.com/en-us/library/system.data.objects.objectcontext.savingchanges.aspx

It is about all I can think of doing at this point.
0
 

Author Closing Comment

by:enrique_aeo
ID: 33684155
Thank you very much, hope can help with another problem (ID: 26473224 - LINQ-The data reader is incompatible with)
0

Featured Post

Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many of us here at EE write code. Many of us write exceptional code; just as many of us write exception-prone code. As we all should know, exceptions are a mechanism for handling errors which are typically out of our control. From database errors, t…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
In a question here at Experts Exchange (https://www.experts-exchange.com/questions/29062564/Adobe-acrobat-reader-DC.html), a member asked how to create a signature in Adobe Acrobat Reader DC (the free Reader product, not the paid, full Acrobat produ…
Screencast - Getting to Know the Pipeline

916 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question