C# Requires Chilkat v11.5.0+

Box: Get a Service Account Token with Client Credentials

See more Box Examples

Obtain a Box service-account token using the client credentials grant. Configure and authorize a Server app first. Load credentials from protected application configuration; do not ship a client secret in a public client.

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.HttpCurl curl = new Chilkat.HttpCurl();
curl.SetVar("client_id","BOX_CLIENT_ID");
curl.SetVar("client_secret","BOX_CLIENT_SECRET");
curl.SetVar("enterprise_id","BOX_ENTERPRISE_ID");
//  enterprise identifies the app's service account. This is not an admin-user token.
curl.ClearTargetOutput("*");
curl.ClearVar("access_token");
curl.AddTargetOutput("access_token","access_token");
success = curl.DoYourThing("curl -X POST \"https://api.box.com/oauth2/token\" --data-urlencode \"grant_type=client_credentials\" --data-urlencode \"client_id={{client_id}}\" --data-urlencode \"client_secret={{client_secret}}\" --data-urlencode \"box_subject_type=enterprise\" --data-urlencode \"box_subject_id={{enterprise_id}}\"");
if ((success != true) || (curl.StatusCode != 200)) {
    Debug.WriteLine("Box request failed. HTTP status: " + Convert.ToString(curl.StatusCode));
    Debug.WriteLine("Failure reason: " + Convert.ToString(curl.FailReason));
    return;
}

if (curl.VarDefined("!") != true) {
    Debug.WriteLine("Expected response fields are missing.");
    return;
}

//  Keep this token in protected application memory; reacquire it when it expires.
//  Do not print tokens or the complete token response.
Debug.WriteLine("Service-account access token obtained.");
curl.ClearTargetOutput("*");
Chilkat.StringBuilder authorizedCommand1 = new Chilkat.StringBuilder();
authorizedCommand1.SetString("curl -X GET \"https://api.box.com/2.0/users/me?fields=id,name,login\" -H \"Authorization: Bearer {{access_token}}\"");
int headerReplacement1 = authorizedCommand1.Replace("{{access_token}}",curl.GetVar("access_token"));
success = curl.DoYourThing(authorizedCommand1.GetAsString());
if ((success != true) || (curl.StatusCode != 200)) {
    Debug.WriteLine("Box request failed. HTTP status: " + Convert.ToString(curl.StatusCode));
    Debug.WriteLine("Failure reason: " + Convert.ToString(curl.FailReason));
    Debug.WriteLine(curl.ResponseBodyStr);
    return;
}

Debug.WriteLine(curl.ResponseBodyStr);