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Editorial Team
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Asked: 2026-05-26T11:54:27+00:00

I’m developing an app where I need to insert names using special characters like

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I’m developing an app where I need to insert names using special characters like áéíóúñ and I’m using linq to entities with Visual C#.

My database server is SQL 2008 express and the default collation of my database is SQL_Latin1_General_CP1251_CI_AS, however I changed the collation of the fields to SQL_Latin1_General_CP1_CI_AI where I need to insert the special characters mentioned above.

If I insert names with special characters using code similar to this:

 Cliente cli = new Cliente()
            {
                Nombres = cliente.nombres,
                ApellidoP = cliente.apellidoP,
                ApellidoM = cliente.apellidoM,
                FechaNac = cliente.fechaNacimiento
            };
            context.clientes.AddObject(cli);
            context.SaveChanges();

The special characters are translated to their equivalent, but if I insert names with special characters directly in the database (management studio) I have no problems inserting those characters.

I changed fields collation to SQL_Latin1_General_CP1_CI_AI after creating my project in visual studio, so I thought updating model from database would solve the problem but I was wrong.
I also used the debugger to check if special characters were present when I create a new instance of Cliente object, and yes, they’re there.

What could be the problem?

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1 Answer

  1. Editorial Team

    I do not see anything wrong with your code or approach. This seems to be an issue with the Database. The best soltion would be to change the BD collation to SQL_Latin1_General_CP1_CI_AI, but that is usually hard to do if you are pass the development phase.

    You could try one of the following:

    Eliminate the entity or entities that have the field properties that hold the special characters from your model, run Update Model from Database again and re-add the tables. Sometimes an update is not enough to refresh the entities, and maybe your field specific collation configuratino was not taken into account the first time.

    Take a look at this post. Maybe the problem has to do with the design of your tables.

    Or this other post. Using a similar approach, maybe it is possible to change the collation of your BD (if it is not being used by other applications – not likely).

    Hope this helps.

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