private void upgradesAndDowngradesToolStripMenuItem_Click(object sender, EventArgs e)
{
if (this.upDownGradesWindow == null)
{
this.upDownGradesWindow = new UpDownGradesWindow();
this.upDownGradesWindow.MdiParent = this;
this.upDownGradesWindow.FormClosed += new FormClosedEventHandler(this.upDownGradesWindow_FormClosed);
this.upDownGradesWindow.Show();
}
else
{
this.upDownGradesWindow.Activate();
}
}
private void upDownGradesWindow_FormClosed(object sender, FormClosedEventArgs e)
{
this.upDownGradesWindow = null;
}
