title: RsaCryptoProvider C# export public key in DER format
body: <p>Without using Bouncy Castle - using just C# .NET I need to generate a public/private key pair and send the public key to a service by BASE64 Encoding the key in DER format.  </p>
  
  <p>Can anyone help with the export in DER format? I can create the keypair easily enough but the DER format has me stumped.  </p>