On June 1, 2016 the ArcGIS API for Silverlight entered the retired phase of its product life cycle. There will be no further updates to the product or its documentation. We recommend you explore Web based solutions based on the ArcGIS API for JavaScript.
You can no longer sign into this site. Go to your ArcGIS portal or the ArcGIS Location Platform dashboard to perform management tasks.
Create, manage, and access API keys and OAuth 2.0 developer credentials, hosted layers, and data services.
Manage billing, monitor service usage, and access additional resources.
Learn more about these changes in the What's new in Esri Developers June 2024 blog post.