private void Submit_Click(object sender, EventArgs e) { string question = PassQue_label.Text; string answer = PassAns_textbox.Text; if (string.Compare(question, "") == 0 || string.Compare(question, "") == 0) { MessageBox.Show("问题和答案不能为空", "Sorry"); } else if (string.Compare(answerRight, answer) == 0) { PasswordSet2 pwset = new PasswordSet2(id_textbox.Text); if (pwset.ShowDialog() == DialogResult.OK) { this.Close(); } } else { MessageBox.Show("您可能填写错啦", "Sorry"); } }