public FORM_MNG_PRODUCTS() { InitializeComponent(); if (frm == null) { frm = this; } }
static void frm_FormClosed(object sender, FormClosedEventArgs e) { frm = null; }
private void Tool_MNGITEMS_Click(object sender, EventArgs e) { FORM_MNG_PRODUCTS form = new FORM_MNG_PRODUCTS(); form.ShowDialog(); }