private void productionToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (formula.IsDisposed)
{
formula = new Presentation.frmFormula();
}
formula.MdiParent = this;
formula.Show();
formula.BringToFront();
}
private void formulaToolStripMenuItem_Click(object sender, EventArgs e)
{
if (formula.IsDisposed)
{
formula = new frmFormula();
}
formula.MdiParent = this;
formula.Show();
formula.BringToFront();
}