private void 修改信箱_Click(object sender, EventArgs e) { if (!this.Email.Enabled) { this.修改信箱.Text = "確認修改"; this.Email.Enabled = true; } else { if (Cls_JA_Member.UpdateEmail(this.Email.Text)) { MessageBox.Show("修改成功"); this.修改信箱.Text = "修改"; this.Email.Enabled = false; } else { MessageBox.Show("修改失敗"); } } }