问获取访问令牌和授权

EN

public void GetAccessToken(string code, string ClientId, string ClientSecret)
    {
        RestClient rs = new RestClient();
        string grant_type = "authorization_code";
        RestRequest request = new RestRequest(Method.POST);
        IRestRequest reuest = request;
        string strHeaders = null;
        RestResponse response = default(RestResponse);
        IRestResponse resp = response;
        string strResponse = null;

        try
        {
            rs.BaseUrl = "https://www.box.com/api/oauth2/token";
            request.Resource = "oauth2/token";
            strHeaders = string.Format("grant_type={0}&code={1}&client_id={2}&client_secret={3}", grant_type, code, clientId, Clientsecret);
            request.AddHeader("Authorization", strHeaders);
            resp = rs.Execute(reuest);
            strResponse = resp.Content;

            Label1.Text = strResponse;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }