Hi,

In my project I have some data classes to retrieve data from the database using the Entity Framework. We called these classes *EntityName*Manager. All of them have a method to retrieve entities from database and they behave most like this:

static public EntityA SelectByName(String name)
{
    using (var context = new ApplicationContext())
    {
        var query = 
            from a in context.EntityASet
            where a.Name == name
            select a;

        try
        {
            var entityA = query.First();
            context.Detach(entityA);
            return entityA;
        }
        catch (InvalidOperationException ex)
        {
            throw new DataLayerException(
                String.Format("The entityA whose name is '{0}' was not found.", name),
                ex);
        }
    }
}

You can see that I detach the entity before return it to the method caller. So, my question is "what is the best way to create an update method on my *EntityA*Manager class?"

I'd like to pass the modified entity as a parameter of the method. But I haven't figured out a way of doing it without going to the database and reload the entity and update its values inside a new context.

Any ideas?

Thanks in advance, Carlos Loth.