private void txtLEDid_MouseLeave(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(txtLEDid.Text.Trim()) && id == -1)
{
BllScreeenSetting bllScreeenSetting = new BllScreeenSetting();
DataTable dtScreen = bllScreeenSetting.GetScreenSetting($" and ScreenID= '{txtLEDid.Text.Trim()}'");
if (dtScreen.Rows.Count > 0)
{
MessageBox.Show("屏幕编号已存在!");
}
dtScreen.Dispose();
}
}