C#中判断某软件是否已安装

  Microsoft.Win32.RegistryKey uninstallNode = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall");            foreach (string subKeyName in uninstallNode.GetSubKeyNames())            {                Microsoft.Win32.RegistryKey subKey = uninstallNode.OpenSubKey(subKeyName);                object displayName = subKey.GetValue("DisplayName");                if (displayName != null)                {                    //if (displayName.ToString().Contains("Adobe Reader"))                    //{                        //Console.WriteLine("Exists!");s                    //}                    Console.WriteLine(displayName.ToString());                }            }