Hello.
Im trying to upload a file to a webserver which has the following HTML Form.
The parameters should be sent in the message as in POST and not in the URL.
<FORM ACTION="linkTOASP-Page";
ENCTYPE="MULTIPART/FORM-DATA" METHOD="POST">
<INPUT TYPE="file" NAME="file1">
<INPUT TYPE="Hidden" NAME="path">
<INPUT TYPE="Hidden" NAME="folder">
<INPUT TYPE="submit" VALUE="Submit">
</FORM>
I call my function like this
NameValueCollection paramters = new NameValueCollection();
parameters ["path"] = "1";
parameters ["folder"] = "1";
string file;
file = "C:\\test.txt”;
string answer = uploadFile(file, linkTOASP-Page , "file1", parameters);
This is my code for handling the upload...but it's not working :(
public static string uploadFile(string filePath, string url,
string nameOfFileParameter, NameValueCollection parameters)
{
string postdata;
postdata = "?";
if (parameters != null)
{
foreach (string key in parameters.Keys)
{
postdata += key + "=" + parameters.Get(key) + "&";
}
}
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] data = encoding.GetBytes(postdata);
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(url);
webrequest.ContentType = "multipart/form-data;";
webrequest.Method = "POST";
string filedata = nameOfFileParameter + "=" + Path.GetFileName(filePath);
byte[] filedataBytes = encoding.GetBytes(filedata);
FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
long length = data.Length + filedataBytes.Length + fileStream.Length;
webrequest.ContentLength = length;
Stream requestStream = webrequest.GetRequestStream();
//write hidden parameters
requestStream.Write(data, 0, data.Length);
//write filename
requestStream.Write(filedataBytes, 0, filedataBytes.Length);
//write file
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);
requestStream.Flush();
requestStream.Close();
WebResponse responce = webrequest.GetResponse();
Stream s = responce.GetResponseStream();
StreamReader sr = new StreamReader(s);
sr.Close();
s.Close();
fileStream.Close();
return sr.ReadToEnd();
}
Im getting "invalid path characters" as a server error in server log if that helps.
Thx for any help