void FrmOMS_FormClosed(object sender, FormClosedEventArgs e)
{
if (sender is frmDataCenter)
{
frmDataCenter = null;
}
}
private void toolStripMenuItem1_Click(object sender, EventArgs e)
{
if (frmDataCenter == null)
{
frmDataCenter = new frmDataCenter();
frmDataCenter.FormClosed += new FormClosedEventHandler(FrmOMS_FormClosed);
}
if (frmDataCenter == null)
{
frmDataCenter = new frmDataCenter();
}
frmDataCenter.Show(this.dockPanel2);
}