/// <summary>
        /// Deletes a student record.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnDelete_Click(object sender, EventArgs e)
        {
            StudentEntity student = new StudentEntity();

            if (txtId.Text != string.Empty)
            {
                student.Id = Convert.ToInt32(txtId.Text);
                CheckStudentValidations studentValidations = new CheckStudentValidations();
                if (studentValidations.DeleteStudent(student) != 0)
                {
                    MessageBox.Show("Student Data deleted Successfully", "Saved", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                    ClearFields();
                    txtId.Enabled = false;
                }
                else
                {
                    MessageBox.Show("Error Occured while save", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            else
            {
                MessageBox.Show("Please search the student you want to delete", "Result", MessageBoxButtons.OK, MessageBoxIcon.Information);
                txtId.Enabled = false;
            }
        }
        public void ShouldDeleteStudent(StudentEntity student)
        {
            var result = sut.DeleteStudent(student);

            Assert.That(result, Is.EqualTo(1));
        }