//检测域名是否已被添加 protected void domListT1_TextChanged(object sender, EventArgs e) { if (domListBll.isExist(domListT1.Text.Trim()) > 0) { remindL.Text = "该域名已存在,无法添加"; domListBtn.Enabled = false; } else { remindL.Text = "该域名可注册!"; domListBtn.Enabled = true; } domListDP_SelectedIndexChanged(null, null); }