CODEWITHSUNDEEP
c#web-servicesasmxmultipart
FitzChivalry
FitzChivalry

Reputation: 339

get bytearraycontent in web service

I'm trying to parse an image to a byte array and send it to my web service. Problem is, I couldn't find any way to read the bytearraycontent (in the past I have used HttpContext.Current.Request.Files but obviously it isn't there)... any help please?

EDIT - I managed to get the added form data but it won't save the image properly. I switches to stringContent and it still doesn't work, the received string is exactly the same size as the string I sent and yet it can't open it. Added ' requestValidationMode="2.0" ' in web.config.

code:

public async Task uploadAP()
{
    using (var client = new HttpClient())
    {
        MultipartFormDataContent form = new MultipartFormDataContent();
        string str = File.ReadAllText(DEBRIS_PIC_PATH);
                form.Add(new StringContent(str), "ap");
                HttpResponseMessage response = await client.PostAsync("http://192.168.1.10:8080/WS.asmx/uploadAP", form);
    }
}

and obviously something like:

[WebMethod]
[ScriptMethod(UseHttpGet = true)]
public void uploadAP()
{
    string t = HttpContext.Current.Request.Form["ap"];     
    FileStream objfilestream = new FileStream(debrisApPath, FileMode.Create, FileAccess.ReadWrite);
    objfilestream.Write(binaryWriteArray, 0, binaryWriteArray.Length);
    objfilestream.Close();
}

Upvotes: 0

Views: 2590

Answers (1)

David W
David W

Reputation: 10184

Apologies for the delay. Here is an example I promised with old-style ASMX web service that will read ByteArrayContent from a client, following which I will offer two caveats...

using System;
using System.IO;
using System.Collections.Generic;
using System.Web;
using System.Web.Services;
using System.Collections;
using System.Collections.Specialized;
using System.ServiceModel.Activation;
namespace OldWSTest
{
   /// <summary>
   /// Summary description for Service1
   /// </summary>
   [WebService(Namespace = "http://tempuri.org/")]
   [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
   [System.ComponentModel.ToolboxItem(false)]
   [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
   public class Service1 : System.Web.Services.WebService
   {

      [WebMethod]
      public string uploadAP()
      {
         var foo = HttpContext.Current.Request.Form["ap"];

         byte[] bytes = System.Text.Encoding.UTF8.GetBytes(foo);
         // do whatever you need with the bytes here
         return "done";
      }
   }
}

  1. I surely echo John Saunders' comments that, for ground-up web service work, a project like this should take a good, hard look at WCF/WebAPI, not ASMX. I had forgotten what a pain ASMX-based web services could be.

  2. I won't promise this is the ideal way to get this data on the web service side; there are almost surely more elegant/efficient/better/slicker/faster ways to do it. I kept finding roadblocks that I think are tied to the limitations of the old-style web service model. This, however, as best I can test, works"

  3. The AspNetCompatibilityRequirements mode allowed me to access the Form collection, whereas without it, it wasn't available at all without parsing/drilling into the boundary data.

Good luck. I hope this helps.

Upvotes: 1

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