private void addClientButton_Click(object sender, EventArgs e) { try { Client client = new Client(); client.FirstName = firstNameBox.Text; client.LastName = lastNameBox.Text; client.Age = int.Parse(ageBox.Text); client.Height = float.Parse(heightBox.Text); client.Weight = float.Parse(weightBox.Text); client.Gender = gender; if (client.Gender == null) { MessageBox.Show("Please choose a gender", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { if (Equals(dataRetriever.getUsername(), "slavcho44")) { db.insertClient(client, 1); } else { db.insertClient(client, 2); } } } catch (Exception) { MessageBox.Show("Please fill all fields", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }