هزاران نکته در سی شارپ

private void GetInstalledPrograms()
        {
            RegistryKey localmachine = Registry.LocalMachine;
            RegistryKey Uninstall = localmachine.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Uninst  all");
 
            foreach (string key in Uninstall.GetSubKeyNames())
            {
                RegistryKey activeKey = Uninstall.OpenSubKey(key);
                string displayName = (string)activeKey.GetValue("DisplayName");
 
                if (!String.IsNullOrEmpty(displayName))
                    listBox1.Items.Add(displayName);
            }
        }