Check if application is installed in registry

Question

Right now I use this to list all the applications listed in the registry for 32bit & 64. I have seen the other examples of how to check if an application is installed wi

Answer 1

This is a clean way to do this without that much code.

    private static bool IsSoftwareInstalled(string softwareName)
    {
        var key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall") ??
                  Registry.LocalMachine.OpenSubKey(
                      @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall");

        if (key == null)
            return false;

        return key.GetSubKeyNames()
            .Select(keyName => key.OpenSubKey(keyName))
            .Select(subkey => subkey.GetValue("DisplayName") as string)
            .Any(displayName => displayName != null && displayName.Contains(softwareName));
    }

Call it with a if-statement:

if (IsSoftwareInstalled("OpenSSL"))