private void buttonSave_Click(object sender, EventArgs e) { int error = 0; errorProvider.Clear(); if (textBoxName.Text == "") { error++; errorProvider.SetError(textBoxName, "Required"); } if (error > 0) { return; } country.Name = textBoxName.Text; if (country.Update()) { MessageBox.Show("Country is Update"); textBoxName.Text = ""; textBoxName.Focus(); } else { MessageBox.Show(country.Error); } }