@dayanand.shetty

There are two options that are available to you: unique user identifier (UUID) and current locale. If you are using the App Studio application template in Visual Studio, the instance of the Integration services is injected into the constructor of your app under the appHost name:

appHost.Environment.UserId
appHost.Environment.Locale

I'm looking for Eikon username and their location/region like which USA/ASIA/Europe

Also, we want to validate the user is authenticated already through Eikon APP.

Is there any certificate request which we can validate the user instead of validating each UserId?

Like any Eikon Certificate wrapper on each request/response thru Eikon.

App Studio - .NET SDK doesn't provide interfaces to access Eikon username and their location and it is unable to validate the user. Normally, Eikon must be started and run properly before using App Studio - .NET SDK applications.