C# (CSharp) CRM02 frmDonHang Exemples

Exemple #1

 public static frmDonHang CreateInstance()
 {
     if (_singleton == null)
     {
         _singleton = new frmDonHang();
     }
     return(_singleton);
 }

Exemple #2

 private void frmDonHang_FormClosed(object sender, FormClosedEventArgs e)
 {
     _singleton = null;
 }