Method of C Remote Sending and Receiving Data Stream to Generate Picture

This paper describes the method of C # remote sending and receiving data streams to generate pictures. Share it for your reference. The details are as follows:

Transform the picture into data stream and send it to the remote service, receive the data stream through the server background program, and then save it into a picture and store it in the required place.

This way is similar to upload picture function 1, I hope to give you another way to upload picture function.

Send data stream method

/// <summary>
/// PostBinaryData
/// </summary>
/// <param name="url"> To send  url  Web site </param>
/// <param name="bytes"> Data stream to send </param>
/// <returns></returns>
public string PostBinaryData(string url, byte[] bytes)
{
  // The following is a test example 
  //string url = "http://www.test.com/test.ashx";
  //string img = HttpContext.Current.Server.MapPath("../images/test.jpg");
  //byte[] bytes = File.ReadAllBytes(img);
  HttpWebRequest wRequest = (HttpWebRequest)WebRequest.Create(url);
  wRequest.ContentType = "multipart/form-data";
  wRequest.ContentLength = bytes.Length;
  wRequest.Method = "POST";
  Stream stream = wRequest.GetRequestStream();
  stream.Write(bytes, 0, bytes.Length);
  stream.Close();
  HttpWebResponse wResponse = (HttpWebResponse)wRequest.GetResponse();
  StreamReader sReader = new StreamReader(wResponse.GetResponseStream(), System.Text.Encoding.UTF8);
  string str = sReader.ReadToEnd();
  sReader.Close();
  wResponse.Close();
  return str;
}

Method for receiving data stream

public void GetBinaryData()
{
  string imgFile = DateTime.Now.ToString("yyyyMMddhhmmss") + ".jpg";
  string filePath = HttpContext.Current.Server.MapPath(imgFile);
  // Method 1
  int lang = HttpContext.Current.Request.TotalBytes;
  byte[] bytes = HttpContext.Current.Request.BinaryRead(lang);
  string content = System.Text.Encoding.UTF8.GetString(bytes);
  FileStream fStream = new FileStream(filePath, FileMode.Create, FileAccess.Write);
  BinaryWriter bw = new BinaryWriter(fStream);
  bw.Write(bytes);
  bw.Close();
  fStream.Close();    
  // Method 2
  Bitmap img = new Bitmap(HttpContext.Current.Request.InputStream);
  img.Save(filePath);
  HttpContext.Current.Response.Write("ok");
}

I hope this article is helpful to everyone's C # programming.