BL.SeguimientoPacientes.VerificarPacientes C# (CSharp) Méthode

        public bool VerificarPacientes(string numexpediente) {
            try {

                bool found;
                //long numexp = Int64.Parse(numexpediente);
                long numexp = Convert.ToInt64(numexpediente);
                int x = 0;
                var query = (from p in entities.pacientes
                            where p.expediente == numexp
                            select p.nombres);

                int x2 = 0;

                if (!query.Any())
                {
                    found = false;
                }
                else {
                    found = true;
                }
                return found;  
               
            }catch(Exception ex){
                throw new Exception(ex.ToString());
            
            }
        }