public void ValidateIDLengthTest() //tests invalid ID length
        {
            //Arrange
            string           id       = "90090000";
            FinalProjectForm newClass = new FinalProjectForm();

            //Act/assert
            Assert.ThrowsException <ArgumentException>(() => newClass.ValidateID(id));
        }
        public void ValidateValidIDTest() //tests invalid ID length
        {
            //Arrange
            string           id       = "123456789";
            FinalProjectForm newClass = new FinalProjectForm();

            //Act
            newClass.ValidateID(id);

            //Assert
            Assert.IsFalse(newClass.invalidID);
        }
        public void ValidateIDNumOnlyTest() //tests invalid ID
        {
            //Arrange
            string           id       = "900ABCDEF";
            FinalProjectForm newClass = new FinalProjectForm();

            //Act
            newClass.ValidateID(id);

            //Assert
            Assert.IsTrue(newClass.invalidID);
        }