public static string GetAppropriateBitnessModuleModulePath(bool is64bit, RuntimeVersions runtimeVersion)
{
if (RuntimeVersions.V40 == runtimeVersion)
{
// Retrieve the regkey with Read permission. Note that on Windows 8 and later, only Trusted installer has write access to this key.
using (RegistryHandle regKey = RegistryHandle.GetCorrectBitnessHKLMSubkey(is64bit, ServiceModelInstallStrings.WinFXRegistryKey, false))
{
return(regKey.GetStringValue(ServiceModelInstallStrings.RuntimeInstallPathName).TrimEnd('\0') + "\\" + fileName);
}
}
else
{
// Try to find the 3.0 version
RegistryHandle regkey = null;
try
{
if (SafeNativeMethods.ERROR_SUCCESS == RegistryHandle.TryGetCorrectBitnessHKLMSubkey(is64bit, Wcf30RegistryKey, out regkey))
{
return(regkey.GetStringValue(Runtime30InstallPathName).TrimEnd('\0') + "\\" + fileName);
}
else
{
//We don't want to automatically roll forward to 4.0, so we throw an exception if we can't find the 3.0 reg key
throw Tool.CreateException(SR.GetString(SR.FailedToGetRegistryKey, Wcf30RegistryKey, "3.0"), null);
}
}
finally
{
if (regkey != null)
{
regkey.Dispose();
}
}
}
}