Client Scaffolding for license validation

Client.cs

public static void Main(string[] args)
{
    // In a real implementation the public key would be embedded in the assembly 
    // possibly via an embedded resource
    var publicKeyPath = @"..\..\..\..\LicenseData\PublicKey.xml".ResolveBaseDirectory();
    
    // You could also either load the license from the file system or deliver it
    // on demand from a web endpoint
    var licensePath = @"..\..\..\..\LicenseData\License.xml".ResolveBaseDirectory();

    if (!File.Exists(publicKeyPath) || !File.Exists(licensePath))
    {
        Console.WriteLine(Messages.RunServerAppFirst);
        Console.WriteLine(Messages.PressAnyKey);
        Console.ReadKey();

        Environment.Exit(-1);
    }

    ValidateLicense(publicKeyPath, licensePath);

    Console.WriteLine(Messages.NoLicenseViolations);
    Console.WriteLine(Messages.PressAnyKey);

    Console.ReadKey();
}