Эй, взгляните на этот код для загрузки в Image Shack:
Вы можете изменить его для использования на другом веб-сайте, просто используя Fiddler для изменения веб-запросов
public class Uploader
{
public string UploadFileToImageShack(object oFileName)
{
try
{
string fileName = oFileName as string;
string contentType = null;
CookieContainer cookie = new CookieContainer();
NameValueCollection col = new NameValueCollection();
col["MAX_FILE_SIZE"] = "3145728";
col["refer"] = "";
col["brand"] = "";
col["optimage"] = "1";
col["rembar"] = "1";
col["submit"] = "host it!";
List<string> l = new List<string>();
switch (fileName.Substring(fileName.Length - 3, 3))
{
case "jpg":
contentType = "image/jpeg";
break;
case "peg":
contentType = "image/jpeg";
break;
case "gif":
contentType = "image/gif";
break;
case "png":
contentType = "image/png";
break;
case "bmp":
contentType = "image/bmp";
break;
case "tif":
contentType = "image/tiff";
break;
case "iff":
contentType = "image/tiff";
break;
default:
contentType = "image/unknown";
break;
}
string resp;
col["optsize"] = "resample";
resp = UploadFileEx(fileName,
"http://www.imageshack.us/index.php",
"fileupload",
contentType,
col,
cookie);
return resp;
}
catch (Exception ex)
{
return "";
}
}
public static string UploadFileEx(string uploadfile, string url,
string fileFormName, string contenttype, System.Collections.Specialized.NameValueCollection querystring,
CookieContainer cookies)
{
if ((fileFormName == null) ||
(fileFormName.Length == 0))
{
fileFormName = "file";
}
if ((contenttype == null) ||
(contenttype.Length == 0))
{
contenttype = "application/octet-stream";
}
string postdata;
postdata = "?";
if (querystring != null)
{
foreach (string key in querystring.Keys)
{
postdata += key + "=" + querystring.Get(key) + "&";
}
}
Uri uri = new Uri(url + postdata);
string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(uri);
webrequest.CookieContainer = cookies;
webrequest.ContentType = "multipart/form-data; boundary=" + boundary;
webrequest.Method = "POST";
// Build up the post message header
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(boundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"");
sb.Append(fileFormName);
sb.Append("\"; filename=\"");
sb.Append(Path.GetFileName(uploadfile));
sb.Append("\"");
sb.Append("\r\n");
sb.Append("Content-Type: ");
sb.Append(contenttype);
sb.Append("\r\n");
sb.Append("\r\n");
string postHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);
// Build the trailing boundary string as a byte array
// ensuring the boundary appears on a line by itself
byte[] boundaryBytes =
Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
FileStream fileStream = new FileStream(uploadfile,
FileMode.Open, FileAccess.Read);
long length = postHeaderBytes.Length + fileStream.Length +
boundaryBytes.Length;
webrequest.ContentLength = length;
Stream requestStream = webrequest.GetRequestStream();
// Write out our post header
requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
// Write out the file contents
byte[] buffer = new Byte[checked((uint)Math.Min(4096,
(int)fileStream.Length))];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
requestStream.Write(buffer, 0, bytesRead);
// Write out the trailing boundary
requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);
WebResponse responce = webrequest.GetResponse();
Stream s = responce.GetResponseStream();
StreamReader sr = new StreamReader(s);
return sr.ReadToEnd();
}
}