Question

I am using registry keys to access the path of an XML file from installed folder of my machine.
My machine has 32 bit OS. So I am using

using (RegistryKey pRegKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Wow6432Node\Folder\subfolder\key"))
{
    if (pRegKey == null)
    {
        return;
    } 
    else
        // get path

But when I run it in 64 bit machine it is showing error, since I have not handled the exception case for 64 bit OS.

How can I handle it??

Answer 1

If your app is 32-bit and you want to install it both on 32-bit and 64-bit OS, use this:

string regPath = string.Format(@"SOFTWARE\{0}AppName\Folder\subfolder\key", 
                      Environment.Is64BitProcess ? @"Wow6432Node\" : string.Empty());

using (RegistryKey pRegKey = Registry.LocalMachine.OpenSubKey(regPath))
        {
             .....