private void Login_varify_Click(object sender, EventArgs e)
        {
            string             username = textBox5.Text, password = textBox4.Text;
            UserAuthentication user        = new UserAuthentication(username, password);
            string             designation = user.LoginAuth().Trim().ToLower();

            if (designation.Equals("non"))
            {
                MessageBox.Show("Invalide Username and Password");
            }
            else
            {
                logout.Visible = true;
                textBox5.Text  = "";
                textBox4.Text  = "";
                if (designation.Equals("admin"))
                {
                    label5.Text    = "";
                    panel2.Visible = false;
                    panel3.Visible = true;
                    Doctor.Checked = true;
                    create.Checked = true;
                    panel1.Visible = true;
                    label10.Text   = "Admin";
                }
                else if (designation.Equals("receptionist"))
                {
                    panel1.Visible         = false;
                    panel2.Visible         = false;
                    panel3.Visible         = false;
                    panel4.Visible         = false;
                    panel5.Visible         = true;
                    radioButton101.Checked = true;
                    panel101.Visible       = true;
                    panel110.Visible       = false;
                    label10.Text           = "Receptionist";
                }
                else if (designation.Equals("doctor"))
                {
                    panel1.Visible         = false;
                    panel2.Visible         = false;
                    panel3.Visible         = false;
                    panel4.Visible         = false;
                    panel5.Visible         = false;
                    panel101.Visible       = false;
                    panel110.Visible       = false;
                    panel6.Visible         = true;
                    panel106.Visible       = true;
                    panel109.Visible       = false;
                    radioButton121.Checked = true;
                    label10.Text           = "Doctor";
                }
                else
                {
                    panel1.Visible         = false;
                    panel2.Visible         = false;
                    panel3.Visible         = false;
                    panel4.Visible         = false;
                    panel5.Visible         = false;
                    panel101.Visible       = false;
                    panel110.Visible       = false;
                    panel6.Visible         = false;
                    panel106.Visible       = false;
                    panel109.Visible       = false;
                    panel7.Visible         = true;
                    panel107.Visible       = false;
                    panel108.Visible       = false;
                    panel103.Visible       = true;
                    radioButton111.Checked = true;
                    label10.Text           = "Pharmacist";
                }
            }
        }