private void btnSave_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(txtName.Text)) { MessageBox.Show("Input name"); } else { if (HelperImage.ExistsName(txtName.Text) && txtName.Enabled == true) { MessageBox.Show("Name has other item"); } else { if (MessageBox.Show("Do you want save changes ?", "Save", MessageBoxButtons.YesNo) == DialogResult.Yes) { HelperImage.SaveInfo(txtName.Text, txtOutput.Text); DialogResult = DialogResult.OK; this.Close(); } } } }