Http MultipartFormDataContent

我被要求在C#中执行以下操作:

/**

* 1. Create a MultipartPostMethod

* 2. Construct the web URL to connect to the SDP Server

* 3. Add the filename to be attached as a parameter to the MultipartPostMethod with parameter name "filename"

* 4. Execute the MultipartPostMethod

* 5. Receive and process the response as required

* /

我写了一些没有错误的代码,但是没有附加文件.

有人可以查看我的C#代码,看看我是否错误地编写了代码？

这是我的代码:

var client = new HttpClient();
const string weblinkUrl = "http://testserver.com/attach?";
var method = new MultipartFormDataContent();
const string fileName = "C:\file.txt";
var streamContent = new StreamContent(File.Open(fileName, FileMode.Open));
method.Add(streamContent, "filename");

var result = client.PostAsync(weblinkUrl, method);
MessageBox.Show(result.Result.ToString());

小智.. 6

我知道这是一个老帖子但是对于那些寻求解决方案的人来说,提供一个更直接的答案,这就是我发现的:

using System.Diagnostics;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using System.Web;
using System.Web.Http;

    public class UploadController : ApiController
    {
    public async Task PostFormData()
    {
        // Check if the request contains multipart/form-data.
        if (!Request.Content.IsMimeMultipartContent())
        {
            throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
        }

        string root = HttpContext.Current.Server.MapPath("~/App_Data");
        var provider = new MultipartFormDataStreamProvider(root);

        try
        {
            // Read the form data.
            await Request.Content.ReadAsMultipartAsync(provider);

            // This illustrates how to get the file names.
            foreach (MultipartFileData file in provider.FileData)
            {
                Trace.WriteLine(file.Headers.ContentDisposition.FileName);
                Trace.WriteLine("Server file path: " + file.LocalFileName);
            }
            return Request.CreateResponse(HttpStatusCode.OK);
        }
        catch (System.Exception e)
        {
            return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, e);
        }
    }

}

这是我发现它的地方 http://www.asp.net/web-api/overview/advanced/sending-html-form-data,-part-2
有关更精细的实施
http://galratner.com/blogs/净/存档/ 2013/03 /第22 /使用-HTML-5和最Web的API换Ajax的文件上传,与图像预览和-A-进步,bar.aspx