public static Doc_patiants GetInstance(int DocID) { if (instance == null) { instance = new Doc_patiants(); DID = DocID; } return(instance); }
private void BeforeClose(object sender, FormClosingEventArgs e) { instance = null; }
private void doc_patiants_Click(object sender, EventArgs e) { Doc_patiants Doc_pats = Doc_patiants.GetInstance(DocID); Doc_pats.Show(); }