C# Requires Chilkat v11.5.0+

Box: Refresh and Save Rotated OAuth Tokens

See more Box Examples

Refresh the user token saved by the authorization example. Box refresh tokens are single-use and expire after 60 days. Serialize refreshes for a token pair and save the replacement immediately; do not run concurrent refresh jobs.

See the Box API guide for setup and the complete workflow.

C#

bool success = false;

//  Requires Chilkat 11.5.0 or later and a previously unlocked Chilkat bundle.
//  See Global Unlock Sample.
//  Guide: Box API Guide.

success = false;

Chilkat.JsonObject tokens = new Chilkat.JsonObject();
success = tokens.LoadFile("qa_data/tokens/box_oauth.json");
if (success != true) {
    Debug.WriteLine(tokens.LastErrorText);
    return;
}

Chilkat.OAuth2 oauth2 = new Chilkat.OAuth2();
oauth2.TokenEndpoint = "https://api.box.com/oauth2/token";
oauth2.ClientId = "BOX_CLIENT_ID";
oauth2.ClientSecret = "BOX_CLIENT_SECRET";
oauth2.RefreshToken = tokens.StringOf("refresh_token");
success = oauth2.RefreshAccessToken();
if (success != true) {
    Debug.WriteLine(oauth2.LastErrorText);
    return;
}

success = tokens.Load(oauth2.AccessTokenResponse);
if (success != true) {
    Debug.WriteLine(tokens.LastErrorText);
    return;
}

//  The previous refresh token is now invalid. Preserve this response even if
//  your normal token-store write fails. Do not retry with the old refresh token.
success = tokens.WriteFile("qa_data/tokens/box_oauth.json");
if (success != true) {
    Debug.WriteLine(tokens.LastErrorText);
    return;
}

Debug.WriteLine("New access and refresh tokens saved. Do not log their values.");