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An Elastic IP address is for use in either the EC2-Classic platform or in a VPC. For more information, see Elastic IP Addresses in the Amazon Elastic Compute Cloud User Guide.
[EC2-Classic, VPC in an EC2-VPC-only account] If the Elastic IP address is already associated with a different instance, it is disassociated from that instance and associated with the specified instance.
[VPC in an EC2-Classic account] If you don't specify a private IP address, the Elastic IP address is associated with the primary IP address. If the Elastic IP address is already associated with a different instance or a network interface, you get an error unless you allow reassociation.
This is an idempotent operation. If you perform the operation more than once, Amazon EC2 doesn't return an error.
Namespace: Amazon.EC2
Assembly: AWSSDK.dll
Version: (assembly version)
public abstract AssociateAddressResponse AssociateAddress( AssociateAddressRequest request )
Container for the necessary parameters to execute the AssociateAddress service method.
.NET Framework:
Supported in: 4.5, 4.0, 3.5