The ClientId Property holds the ID of the Azure Data Marketplace account that the application developer registered The Bing Translator Control under. It is used for authentication and billing when calling the Bing Translator Service.
Published date: October 21, 2013
ClientId and ClientSecret values are obtained by registering on the Azure Data Marketplace. The registered account is billed for each request sent to the Translator Service. For more information, see How to: Register the Bing Translator Control with the Azure Data Marketplace.