private void toolStripMenuItem2_Click(object sender, EventArgs e)
{
FormAlarmHis form4 = new FormAlarmHis();
form4.Text = "Message History";
form4.label21.Text = "Message History";
form4.Show();
}
private void bBBToolStripMenuItem_Click(object sender, EventArgs e)
{
FormAlarmHis form4 = new FormAlarmHis();
form4.Show();
}