Sample code:
CspParameters cspParameters = new CspParameters();
cspParameters.ProviderType = 1; // PROV_RSA_FULL
// Create the crypto service provider, generating a new
// key.
mRsaCSP = new RSACryptoServiceProvider(mDefaultKeyLength, cspParameters);
mRsaCSP.PersistKeyInCsp = true;
RSAParameters privateKey = mRsaCSP.ExportParameters(true);
byte[] rsaBytes = mRsaCSP.ExportCspBlob(true);
try
{
X509Certificate2 cert = new X509Certificate2(rsaBytes);
mKeyDataPfx = Convert.ToBase64String(cert.Export(X509ContentType.Pkcs12, password));
}
catch (Exception ce)
{
string error = ce.Message;
}