private void theStockMarketToolStripMenuItem_Click(object sender, EventArgs e)
{
if (this.stockMarketWindow == null)
{
this.stockMarketWindow = new StockMarketWindow();
this.stockMarketWindow.MdiParent = this;
this.stockMarketWindow.FormClosed += new FormClosedEventHandler(this.stockMarketWindow_FormClosed);
this.stockMarketWindow.Show();
}
else
{
this.stockMarketWindow.Activate();
}
}
private void stockMarketWindow_FormClosed(object sender, FormClosedEventArgs e)
{
this.stockMarketWindow = null;
}