Mengapa Aplikasi 32-bit Saya Tidak Boleh Mengakses Kunci Pendaftaran 64-bit HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall?

RegistryKey newKey;
string val;

string KeyPath64Bit = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
RegistryKey mainKey = Registry.LocalMachine.OpenSubKey(KeyPath64Bit);

string[] RegKeys64Bits = Registry.LocalMachine.OpenSubKey(KeyPath64Bit).GetSubKeyNames();

foreach (string s in RegKeys64Bits)
{
   newKey = mainKey.OpenSubKey(s);
   val = newKey.GetValue("DisplayName", -1, RegistryValueOptions.None).ToString();
   if (val != "-1")
      file64.WriteLine(val);
}

using (var hklm = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64))
using (var key = hklm.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"))
{
   // key now points to the 64-bit key
}