private void sSSToolStripMenuItem_Click(object sender, EventArgs e) { if (frm == null) { frm = new FormToolBox(); frm.MdiParent = this; frm.Show(); } }
public static FormToolBox GetInstance() { if (frm == null || frm.IsDisposed) { frm = new FormToolBox(); frm.MdiParent = Form1.ActiveForm; } return(frm); }