C# example and authorization

C# example and authorization

Use case is -- My website allows user to send an email to my support team. I want to require that the user of my website have a valid zoho desk ticket number already in our zoho desk system. So, all I want to do is get one ticket by number. I have not been able to get an authorization token to work (same errors as mentioned here https://help.zoho.com/portal/community/topic/getting-message-invalid-portal-in-response). But it seems I am supported to be using an OauthToken anyway. Can you please provide a C# example of how to do this? The data I want to access (our existing tickets) belongs to my company, not the user that is accessing my website. I don't understand the work flow described here ( https://support.zoho.com/support/APIDocument.do#Authentication#OauthTokens) regarding a "user-consent" page. I am the user. I do not need to ask the user of my software for permission to access the tickets in my zoho desk, which I can access anytime. I am totally baffled as to the work flow you are setting up. Thanks for all help.