AWS SDK Version 3 for .NET
API Reference

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Retrieves the IdentityID associated with a DeveloperUserIdentifier or the list of DeveloperUserIdentifiers associated with an IdentityId for an existing identity. Either IdentityID or DeveloperUserIdentifier must not be null. If you supply only one of these values, the other value will be searched in the database and returned as a part of the response. If you supply both, DeveloperUserIdentifier will be matched against IdentityID. If the values are verified against the database, the response returns both values and is the same as the request. Otherwise a ResourceConflictException is thrown.

You must use AWS Developer credentials to call this API.


For .NET Core, PCL and Unity this operation is only available in asynchronous form. Please refer to LookupDeveloperIdentityAsync.

Namespace: Amazon.CognitoIdentity
Assembly: AWSSDK.CognitoIdentity.dll
Version: 3.x.y.z


public virtual LookupDeveloperIdentityResponse LookupDeveloperIdentity(
         LookupDeveloperIdentityRequest request
Type: Amazon.CognitoIdentity.Model.LookupDeveloperIdentityRequest

Container for the necessary parameters to execute the LookupDeveloperIdentity service method.

Return Value
The response from the LookupDeveloperIdentity service method, as returned by CognitoIdentity.


InternalErrorException Thrown when the service encounters an error during processing the request.
InvalidParameterException Thrown for missing or bad input parameter(s).
NotAuthorizedException Thrown when a user is not authorized to access the requested resource.
ResourceConflictException Thrown when a user tries to use a login which is already linked to another account.
ResourceNotFoundException Thrown when the requested resource (for example, a dataset or record) does not exist.
TooManyRequestsException Thrown when a request is throttled.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

Supported Versions: 4.6 and above
Supported Platforms: Android, iOS, Standalone

See Also