How to upload a binary file (PDF) to Azure using File Services - azure

Question

I'm trying to upload a binary file (PDF or Word) to Azure using the Services from C#. I'm restricted to using the REST API's and therefore I cannot use the SDK.
I've managed to create the file but which REST API should I use to upload the content. As far as I can see the PUT RANGE is only for text (not for binary content).
Which File Services REST API should i use? Or is the File Services API not meant for this and should i use the Blob API?
Best regards,
Michel
string endpoint_putrange = "https://" + ssStorageAccount + ".file.core.windows.net/" + ssShareNaam + "/" + ssBestandsNaam + "?comp=range";
Uri _endpoint_putrange = new Uri(endpoint_putrange);
HttpRequestMessage _requestMessage = new HttpRequestMessage(HttpMethod.Put, _endpoint_putrange);
HttpClient httpClient = new HttpClient();
httpClient.Timeout = new TimeSpan(20000 * 10000); // 20sec in ticks
httpClient.BaseAddress = _endpoint_putrange;
string RequestDateString = DateTime.UtcNow.ToString("R", CultureInfo.InvariantCulture);
// First set the header and construct the canonicalHeader string. See
// These must be in alpabetical order !!!!
string canonicalHeaders = string.Empty;
canonicalHeaders += setHeader(httpClient, "Content-Length", ssBestandsBinary.Length.ToString());
canonicalHeaders += setHeader(httpClient, "x-ms-date", RequestDateString);
canonicalHeaders += setHeader(httpClient, "x-ms-range", "bytes=0-"); // https://learn.microsoft.com/en-us/rest/api/storageservices/specifying-the-range-header-for-file-service-operations
canonicalHeaders += setHeader(httpClient, "x-ms-version", "2020-04-08"); // https://learn.microsoft.com/nl-nl/rest/api/storageservices/versioning-for-the-azure-storage-services
canonicalHeaders += setHeader(httpClient, "x-ms-write", "Update");
// Construct the canonicalResource string
string canonicalResource = "/" + ssStorageAccount + "/" + ssShareNaam + "/" + ssBestandsNaam;
// Construct the string to Sign
string stingToSign = "PUT\n" + /*HTTP Verb*/
"\n" + /*Content-Encoding*/
"\n" + /*Content-Language*/
ssBestandsBinary.Length.ToString() + "\n" + /*Content-Length (empty string when zero)*/
"\n" + /*Content-MD5*/
"\n" + /*Content-Type*/
"\n" + /*Date*/
"\n" + /*If-Modified-Since */
"\n" + /*If-Match*/
"\n" + /*If-None-Match*/
"\n" + /*If-Unmodified-Since*/
"bytes=0-" + "\n" + /*Range*/
canonicalHeaders + /*CanonicalizedHeaders*/
canonicalResource; /*CanonicalizedResource*/
// Sign it
HMACSHA256 hmac = new HMACSHA256();
byte[] dataToHmac = Encoding.UTF8.GetBytes(stingToSign);
string signature = Convert.ToBase64String(hmac.ComputeHash(dataToHmac));
// Add the authorization header
string authorizationHeader = ssStorageAccount + ":" + signature;
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("SharedKey", authorizationHeader);
// How to specify the binary content of the _requestmessage/httpClient
/// ?????????????????????????
// Do the (synchronous) call and collect the response
HttpResponseMessage httpResponse = httpClient.SendAsync(_requestMessage, HttpCompletionOption.ResponseContentRead, CancellationToken.None).GetAwaiter().GetResult();
..... etc etc

Answer 1

Please try by setting the Content property of your _requestMessage. I am assuming that variable ssBestandsBinary is a byte array so you can set the Content property as ByteArrayContent.
Your code could be something like (not tested though):
_requestMessage.Content = new ByteArrayContent(ssBestandsBinary);
HttpResponseMessage httpResponse = httpClient.SendAsync(_requestMessage, HttpCompletionOption.ResponseContentRead, CancellationToken.None).GetAwaiter().GetResult();