public static async Task <IAsyncOperationWithProgress <HttpResponseMessage, HttpProgress> > PostAsync(Uri uri, StorageFile file)
{
using (HttpClient client = new HttpClient())
{
using (var content = new HttpBufferContent(await FileIOHelper.GetBuffer(file)))
{
var response = client.PostAsync(uri, content);
return(response);
}
}
}
/// <summary>
/// Writes multi part HTTP POST request. Author : Farhan Ghumra
/// </summary>
private static void WriteMultipartForm(Stream s, string boundary, Dictionary <string, string> data, string fileName, string fileContentType, byte[] fileData)
{
/// The first boundary
byte[] boundarybytes = Encoding.UTF8.GetBytes("--" + boundary + "\r\n");
/// the last boundary.
byte[] trailer = Encoding.UTF8.GetBytes("\r\n--" + boundary + "–-\r\n");
/// the form data, properly formatted
/// Content-Disposition: form-data; name="text1"
string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
/// the form-data file upload, properly formatted
/// Content-Disposition: form-data; name="userfile1"; filename="E:/s"
/// Content-Type: application/octet-stream
string fileheaderTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\";\r\nContent-Type: {2}\r\n\r\n";
/// Added to track if we need a CRLF or not.
bool bNeedsCRLF = false;
if (data != null)
{
foreach (string key in data.Keys)
{
/// if we need to drop a CRLF, do that.
if (bNeedsCRLF)
{
FileIOHelper.WriteToStream(s, "\r\n");
}
/// Write the boundary.
FileIOHelper.WriteToStream(s, boundarybytes);
/// Write the key.
FileIOHelper.WriteToStream(s, string.Format(formdataTemplate, key, data[key]));
bNeedsCRLF = true;
}
}
/// If we don't have keys, we don't need a crlf.
if (bNeedsCRLF)
{
FileIOHelper.WriteToStream(s, "\r\n");
}
FileIOHelper.WriteToStream(s, boundarybytes);
FileIOHelper.WriteToStream(s, string.Format(fileheaderTemplate, "file", fileName, fileContentType));
/// Write the file data to the stream.
FileIOHelper.WriteToStream(s, fileData);
FileIOHelper.WriteToStream(s, trailer);
}
/// <summary>
/// Creates HTTP POST request & uploads database to server. Author : Farhan Ghumra
/// </summary>
public static void UploadFilesToServer(Uri uri, Dictionary <string, string> data, string fileName, string fileContentType, byte[] fileData)
{
string boundary = "----------" + Guid.NewGuid().ToString();
HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(uri);
httpWebRequest.ContentType = "multipart/form-data; boundary=" + boundary;
httpWebRequest.Method = "POST";
httpWebRequest.BeginGetRequestStream((result) =>
{
try
{
HttpWebRequest request = (HttpWebRequest)result.AsyncState;
using (Stream requestStream = request.EndGetRequestStream(result))
{
WriteMultipartForm(requestStream, boundary, data, fileName, fileContentType, fileData);
}
request.BeginGetResponse(async a =>
{
try
{
var response = request.EndGetResponse(a);
var responseStream = response.GetResponseStream();
using (var sr = new StreamReader(responseStream))
{
using (StreamReader streamReader = new StreamReader(response.GetResponseStream()))
{
string responseString = streamReader.ReadToEnd();
//responseString is depend upon your web service.
if (responseString == "Success")
{
await FileIOHelper.DeleteLogAsync(fileName);
}
else
{
}
}
}
}
catch (Exception)
{
}
}, null);
}
catch (Exception)
{
}
}, httpWebRequest);
}
