private void businessNewsWindow_FormClosed(object sender, FormClosedEventArgs e) { this.businessNewsWindow = null; }
private void businessNewsToolStripMenuItem1_Click(object sender, EventArgs e) { if (this.businessNewsWindow == null) { this.businessNewsWindow = new BusinessNewsWindow(); this.businessNewsWindow.MdiParent = this; this.businessNewsWindow.FormClosed += new FormClosedEventHandler(this.businessNewsWindow_FormClosed); this.businessNewsWindow.Show(); } else { this.businessNewsWindow.Activate(); } }