Sending Files using HTTP POST in c# [closed]

Question

I have a small C# web application.How can I get the c# code that allows user to send files by HTTP POST.It should be able to send text files,image files,excel, csv, doc (all types of files) without using stream reader and all.

Answer 1

You can try the following code:

    public void PostMultipleFiles(string url, string[] files) {     string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x");     HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);     httpWebRequest.ContentType = "multipart/form-data; boundary=" + boundary;     httpWebRequest.Method = "POST";     httpWebRequest.KeepAlive = true;     httpWebRequest.Credentials = System.Net.CredentialCache.DefaultCredentials;     Stream memStream = new System.IO.MemoryStream();     byte[] boundarybytes =System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary     +"\r\n");     string formdataTemplate = "\r\n--" + boundary + "\r\nContent-Disposition:  form-data; name=\"{0}\";\r\n\r\n{1}";     string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n Content-Type: application/octet-stream\r\n\r\n";     memStream.Write(boundarybytes, 0, boundarybytes.Length);     for (int i = 0; i < files.Length; i++)     {         string header = string.Format(headerTemplate, "file" + i, files[i]);         //string header = string.Format(headerTemplate, "uplTheFile", files[i]);         byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);         memStream.Write(headerbytes, 0, headerbytes.Length);         FileStream fileStream = new FileStream(files[i], FileMode.Open,         FileAccess.Read);         byte[] buffer = new byte[1024];         int bytesRead = 0;         while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)         {             memStream.Write(buffer, 0, bytesRead);         }         memStream.Write(boundarybytes, 0, boundarybytes.Length);         fileStream.Close();     }     httpWebRequest.ContentLength = memStream.Length;     Stream requestStream = httpWebRequest.GetRequestStream();     memStream.Position = 0;     byte[] tempBuffer = new byte[memStream.Length];     memStream.Read(tempBuffer, 0, tempBuffer.Length);     memStream.Close();     requestStream.Write(tempBuffer, 0, tempBuffer.Length);     requestStream.Close();     try     {         WebResponse webResponse = httpWebRequest.GetResponse();         Stream stream = webResponse.GetResponseStream();         StreamReader reader = new StreamReader(stream);         string var = reader.ReadToEnd();      }     catch (Exception ex)     {         response.InnerHtml = ex.Message;     }     httpWebRequest = null; }