Subject: RE: Request Example code for calling WQX Web API services 

Hi Kevin, here’s the code we’re using. We basically used the example application Rick sent.


private string UserId;
        private string PrivateKey;
        private string UrlEndpoint;a



private WebClient PrepareGetHeader(Uri uri, ContentType contentType)
        {
            WebClient client = new WebClient();
            string timeStamp = "";
            string data = "";
            string s = "";
            byte[] signature;
            client.Headers.Add("X-UserID", UserId);
            timeStamp = DateTime.UtcNow.ToString();
            client.Headers.Add("X-Stamp", timeStamp);
            data = String.Format("{0}{1}{2}{3}", UserId, timeStamp, uri.ToString(), "GET");
            s = "";
            signature = Encoding.UTF8.GetBytes(data);
            using (HMACSHA256 hmac = new HMACSHA256(Convert.FromBase64String(PrivateKey)))
            {
                byte[] signatureBytes = hmac.ComputeHash(signature);
                s = Convert.ToBase64String(signatureBytes);
                client.Headers.Add("X-Signature", Convert.ToBase64String(signatureBytes));
            }
            if (contentType == ContentType.TextPlain) { }
            string contentTypeString = "";
            switch (contentType)
            {
                case ContentType.TextPlain:
                    contentTypeString = "text/plain";
                    break;
                case ContentType.Json:
                    contentTypeString = "application/json";
                    break;
                case ContentType.Xml:
                    contentTypeString = "application/xml";
                    break;
            }
            client.Headers.Add("Content-Type", contentTypeString);
            return client;
        }

        private string UploadFileToWqx(string filePath, string fileName)
        {
            string fileId = "";
            try
            {
                string uriString = string.Concat(UrlEndpoint, "Upload/", fileName);
                Uri uri = new Uri(uriString);
                WebClient client = PreparePostHeader(uri);
                FileStream sourceFile = new FileStream(filePath + fileName, FileMode.Open, FileAccess.Read);
                BinaryReader binReader = new BinaryReader(sourceFile);
                byte[] fileInput = new byte[sourceFile.Length]; //create byte array of size file
                for (long i = 0; i < sourceFile.Length; i++)
                {
                    fileInput[i] = binReader.ReadByte(); //read until done
                }
                sourceFile.Close();
                binReader.Close();
                fileInput = client.UploadData(uri, fileInput);
                fileId = System.Text.Encoding.UTF8.GetString(fileInput);
                fileId = fileId.Substring(1, fileId.Length - 2);
            }
            catch (WebException e)
            {
                Exception e2 = new Exception(((HttpWebResponse)e.Response).StatusDescription, e);
                throw e2;
            }
            catch (Exception e)
            {
                Exception e2 = new Exception("Upload: Failed, confirm file parameter", e);
                throw e2;
            }
            return fileId;
        }