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Forum Discussion
How to programmatically get the Authorization code without requiring the user approval in OAuth 2.0
Hi,
I need to get approve code programmatically without this form via c# code
this is my code
How it should be modified in order to get approve code automatically without us...
Ivan_ wrote:...
The problem is that this code does not work in my Application. It stops at Proce/ssCodeFlowAsync method and after that the eternal loading of response begins. Sometimes eternal loading begins at HandleJSRedirect and HandleOAuth2Redirect methods, I do not know what causes such behavior.
...
Ivan_, the code is for one time use!!! Once you get your credentials (access token and refresh token) the code isn't valid anymore! You should keep received credentials (primary the refresh token) and reuse later when needed to construct client object. Why after the authentication (you have credentials already) are you calling still handlers designate for initial authentication? 🤔 I cannot see a reason.
Greg-DB
Dropbox Staff
Dropbox StaffIvan_ Здравко is correct, to receive the authorization code programmatically, you should use a redirect URI. You can find more information on how this process works in the OAuth Guide and authorization documentation.
Also note that it is not possible to fully automate the OAuth process where the user chooses to authorize the app and the app then receives the resulting access token and optional refresh token. This needs to be done manually by the user at least once. If your app needs to maintain long-term access without the user manually re-authorizing it repeatedly, the app should request "offline" access so that it gets a refresh token. The refresh token doesn't expire and can be stored and used repeatedly to get new short-lived access tokens whenever needed, without the user manually reauthorizing the app
For the official Dropbox API v2 .NET SDK in C#, you can find an example of getting and using an access token and refresh token, via a redirect URI, in the OauthBasic example (non-PKCE, meant for server-side apps) as well as in the OAuthPKCE example (PKCE, meant for client-side apps).
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