Question

public TEntity GetSingle(Func<TEntity, bool> predicate)
{
    try 
    { 
        var teste = _context.Set<TEntity>().Single(predicate); 
    }
    catch (Exception)
    {
        return null;
    }

    return _context.Set<TEntity>().Single(predicate);
}

Func<vw_UsuarioPerfilAtributo, bool> expressionPerfil = Perf => Perf.IdUsuario == memo.IdUsuario//And Perf.IdTipoPerfil(MaxValue) // And Perf.Name.lenght > 3;

Session.Add("Permissao",vw_usuarioPerfilAtributoRepository.GetSingle(expressionPerfil).IdTipoPerfil);

Simple problems of query, but in lambda I do not know good way to do “AND” + “MaxValue” + other “WHERE” all examples for only one WHERE.

Answer 1

In Lambda you can simple add any condition using && (For And) and || For(OR)

Func<vw_UsuarioPerfilAtributo, bool> expressionPerfil = Perf => 
                   Perf.IdUsuario == memo.IdUsuario  && 
                   Perf.IdTipoPerfil(MaxValue) && 
                   Perf.Name.lenght > 3;