//Run when "Update" button is clicked. Saves the edited data to the database via UserAccountController.
        private void btnUpdate_Click(object sender, EventArgs e)
        {
            decimal accNo = Convert.ToDecimal(txtAccNumber.Text);
            var     acc   = accController.Get(accNo).First();

            acc.AccountNo  = Convert.ToInt32(txtAccNumber.Text);
            acc.Name       = txtName.Text;
            acc.Dob        = dateTimePicker1.Value.ToString();
            acc.MotherName = null;
            acc.FatherName = null;
            acc.PhoneNo    = txtBoxPhone.Text;
            if (rButtonMale1.Checked == true)
            {
                acc.Gender = "male";
            }
            else
            {
                if (rButtonFemale1.Checked == true)
                {
                    acc.Gender = "female";
                }
            }
            if (rbtnMarried1.Checked == true)
            {
                acc.MaritialStatus = "Married";
            }
            else
            {
                if (rbtnUnmarried1.Checked == true)
                {
                    acc.MaritialStatus = "Unmarried";
                }
            }
            acc.Address = txtBoxAddress.Text;
            acc.Oblast  = txtBoxOblast.Text;
            acc.State   = txtBoxCity.Text;
            accController.Update(acc);
            MessageBox.Show("Данните са обновени!");
            dataGridView1.Update();
        }