//show form to edit piece
private void selectedPieceToolStripMenuItem_Click(object sender, EventArgs e)
{
if (addeditPiece == null || addeditPiece.IsDisposed)
{
addeditPiece = new NewPiece(this, pieces[selectedPiece]);
}
this.Enabled = false;
addeditPiece.Show();
}
//show form to add a piece
private void newPieceToolStripMenuItem_Click(object sender, EventArgs e)
{
if (addeditPiece == null || addeditPiece.IsDisposed)
{
addeditPiece = new NewPiece(this, new CatalogPiece());
}
this.Enabled = false;
addeditPiece.Show();
}