private void button101_Click(object sender, EventArgs e) { try { string name = textBox101.Text; string mobile = textBox103.Text; string Address = textBox102.Text; DateTime d1 = dateTimePicker101.Value; DateTime d2 = dateTimePicker102.Value; Receptionist receptionist = new Receptionist(d1, d2, name, mobile, Address, textBox104.Text); string s = receptionist.insert(); MessageBox.Show(s); } catch (Exception f) { MessageBox.Show("All Fields Are Required"); } }