X509Certificate2.GetECDiffieHellmanPrivateKey Method    
Definition
Important
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Gets the ECDiffieHellman private key from this certificate.
public:
 System::Security::Cryptography::ECDiffieHellman ^ GetECDiffieHellmanPrivateKey();
	public System.Security.Cryptography.ECDiffieHellman? GetECDiffieHellmanPrivateKey();
	member this.GetECDiffieHellmanPrivateKey : unit -> System.Security.Cryptography.ECDiffieHellman
	Public Function GetECDiffieHellmanPrivateKey () As ECDiffieHellman
	Returns
The private key, or null if this certificate does not have an ECDiffieHellman private key.
Exceptions
The handle is invalid.