小编los*_*rob的帖子

我正在使用 RestSharp 与 UPS API 对话。

我有 POSTMAN，我可以很好地与 API 对话，但是当我将其移植到 c# 时，我得到了一个空值的response.Content。

private void button2_Click(object sender, EventArgs e)
        {
            label1.Text = CustomerName;
            MessageBox.Show(username);
            MessageBox.Show(password);
            MessageBox.Show(Lic);
            try
            {
                var client = new RestClient("https://wwwcie.ups.com/rest/Track");
                var request = new RestRequest(Method.POST);
                request.AddHeader("postman-token", "73a23cf5-558a-9a83-ec80-4a224b35351a");
                request.AddHeader("cache-control", "no-cache");
                request.AddHeader("content-type", "application/json");
                request.AddParameter("application/json", "{\r\n  \"UPSSecurity\": {\r\n    \"UsernameToken\": {\r\n      \"Username\": " + username + ",\r\n      \"Password\": " + password + "\r\n    },\r\n    \"ServiceAccessToken\": {\r\n      \"AccessLicenseNumber\": " + Lic + "\r\n    }\r\n  },\r\n  \"TrackRequest\": {\r\n    \"Request\": {\r\n      \"RequestAction\": \"Track\",\r\n      \"RequestOption\": \"activity\"\r\n …