(C# UWP/WinRT) Amazon MWS Upload Invoice

Demonstrates how to upload an invoice using _UPLOAD_VAT_INVOICE_FeedType to submit an invoice for an order.

For more information, see https://m.media-amazon.com/images/G/03/B2B/invoice-uploader-developer-documentation.pdf

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

bool success;

Chilkat.Rest rest = new Chilkat.Rest();

// Connect to the Amazon MWS REST server.
// 
// Make sure to connect to the correct Amazon MWS Endpoint, otherwise
// you'll get an HTTP 401 response code.
// 
// See Amazon MWS endpoints and MarketplaceId values

bool bTls = true;
int port = 443;
bool bAutoReconnect = true;
success = await rest.ConnectAsync("mws.amazonservices.com",port,bTls,bAutoReconnect);

rest.Host = "mws.amazonservices.com";

// MarketplaceList.Id parameter This should be the marketplace in which the order was placed. Only one marketplace must be used per order.T
// Here are the marketplace ID's
// Spain: A1RKKUPIHCS9HS
// UK: A1F83G8C2ARO7P
// France: A13V1IB3VIYZZH
// Germany: A1PA6795UKMFR9
// Italy: APJ6JRA9NG5V4
// ...
// (See https://docs.developer.amazonservices.com/en_US/dev_guide/DG_Endpoints.html)

// FeedOptions parameter  Seller can input key value pairs to give important metadata along with the PDF invoice.
rest.AddQueryParam("FeedOptions","metadata:orderid=206-2341234-3455465;metadata:invoicenumber=INT-3431-XJE3;metadata:documenttype=Invoice");

// Load the PDF invoice file that is to be the body of the HTTP POST request.
Chilkat.BinData pdfData = new Chilkat.BinData();
success = pdfData.LoadFile("qa_data/pdf/sample.pdf");

// Get the MD5 hash of the PDF data.
Chilkat.Crypt2 crypt = new Chilkat.Crypt2();
crypt.HashAlgorithm = "md5";
crypt.EncodingMode = "base64";
string md5Hash = crypt.HashBdENC(pdfData);

rest.AddQueryParam("AWSAccessKeyId","0PB842ExampleN4ZTR2");
rest.AddQueryParam("Action","SubmitFeed");
rest.AddQueryParam("FeedType","_UPLOAD_VAT_INVOICE_");
rest.AddQueryParam("MWSAuthToken","EXAMPLE-amzn.mws.4ea38b7b-f563-7709-4bae-87aea-EXAMPLE");

rest.AddQueryParam("MarketplaceIdList.Id.1","ATVExampleDER");
rest.AddQueryParam("SellerId","A1XExample5E6");
rest.AddQueryParam("ContentMD5Value",md5Hash);
rest.AddQueryParam("SignatureMethod","HmacSHA256");
rest.AddQueryParam("SignatureVersion","2");
rest.AddQueryParam("Version","2009-01-01");

// Add the MWS Signature param.  (Also adds the Timestamp parameter using the curent system date/time.)
rest.AddMwsSignature("POST","/Feeds/2009-01-01","mws.amazonservices.com","YOUR_MWS_SECRET_ACCESS_KEY_ID");

rest.AddHeader("Content-Type","application/octet-stream");
Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
success = await rest.FullRequestBdAsync("POST","/Feeds/2009-01-01",pdfData,sbResponseBody);
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

if (rest.ResponseStatusCode != 200) {
    // Examine the request/response to see what happened.
    Debug.WriteLine("response status code = " + Convert.ToString(rest.ResponseStatusCode));
    Debug.WriteLine("response status text = " + rest.ResponseStatusText);
    Debug.WriteLine("response header: " + rest.ResponseHeader);
    Debug.WriteLine("response body: " + sbResponseBody.GetAsString());
    Debug.WriteLine("---");
    Debug.WriteLine("LastRequestStartLine: " + rest.LastRequestStartLine);
    Debug.WriteLine("LastRequestHeader: " + rest.LastRequestHeader);
}

// Examine the XML returned in the response body.
Debug.WriteLine(sbResponseBody.GetAsString());
Debug.WriteLine("----");
Debug.WriteLine("Success.");