private void Student_Details_Load(object sender, EventArgs e)
        {
            string cmd = "Select Person.Id, Student.RegistrationNo,Person.FirstName,Person.LastName,Person.Contact,Person.Email,Person.Gender as g,Person.DateOfBirth from Person join Student on Student.Id = Person.Id";

            dbConnection.getInstance().fill(cmd, dataGridView1);
            Advisor ad = new Advisor();

            ad.fillgender(dataGridView1);
        }
        private void AllAdvisors_Load(object sender, EventArgs e)
        {
            tableLayoutPanel1.Visible = false;
            panel2.Visible            = false;

            string s = "Select a.Id, p.Gender as g, p.FirstName,p.LastName,p.Contact,p.Email,a.Salary,a.Designation,p.DateOfBirth from Advisor as a join Person as p on p.Id = a.Id ";

            dbConnection.getInstance().fill(s, dataGridView1);

            Advisor ad = new Advisor();

            ad.fillgender(dataGridView1);

            string f = "Select Value from Lookup where Category = 'DESIGNATION'";

            ad.load(f, comboBox1);
        }