Obtain images of http and ftp addresses,

Obtain images of http and ftp addresses,

Obtain the thumbnail and original image of the corresponding image based on the http and ftp image addresses.

Public class GetBitmapImageClass {public BitmapSource GetImageHttp (string url, int width) {var image = new BitmapImage (); int BytesToRead = 100; if (! String. isNullOrEmpty (url) {WebRequest request = WebRequest. create (new Uri (url, UriKind. absolute); request. timeout =-1; WebResponse response = request. getResponse (); Stream responseStream = response. getResponseStream (); BinaryReader reader = new BinaryReader (responseStream); MemoryStream memoryStream = new MemoryStream (); byte [] bytebuffer = new byte [BytesToRead]; int bytesRead = reader. read (byt Ebuffer, 0, BytesToRead); while (bytesRead> 0) {memoryStream. write (bytebuffer, 0, bytesRead); bytesRead = reader. read (bytebuffer, 0, BytesToRead);} image. beginInit (); image. decodePixelWidth = width; image. cacheOption = BitmapCacheOption. onLoad; memoryStream. seek (0, SeekOrigin. begin); image. streamSource = memoryStream; image. endInit (); image. freeze (); memoryStream. close (); reader. close (); respon SeStream. Close (); response. Close ();} return image;} public BitmapSource GetImageFtp (string url, int width) {var image = new BitmapImage (); if (! String. isNullOrEmpty (url) {FtpWebRequest reqFtp; reqFtp = (FtpWebRequest) FtpWebRequest. create (new Uri (url); reqFtp. method = WebRequestMethods. ftp. downloadFile; reqFtp. useBinary = true; FtpWebResponse response = (FtpWebResponse) reqFtp. getResponse (); Stream ftpStream = response. getResponseStream (); MemoryStream mStream = new MemoryStream (); ftpStream. copyTo (mStream); mStream. position = 0; int length = (int) mStream. length; byte [] returnbyte = new byte [length]; mStream. read (returnbyte, 0, length); mStream. close (); ftpStream. close (); response. close (); System. IO. memoryStream stream = new System. IO. memoryStream (returnbyte); image. beginInit (); image. decodePixelWidth = width; image. cacheOption = BitmapCacheOption. onLoad; stream. seek (0, SeekOrigin. begin); image. streamSource = stream; image. endInit (); image. freeze (); stream. close ();} return image;} [DllImport ("gdi32.dll", SetLastError = true)] private static extern bool DeleteObject (IntPtr hObject); public BitmapSource ToBitmapSource (System. drawing. bitmap bmp) {try {var ptr = bmp. getHbitmap (); var source = System. windows. interop. imaging. createBitmapSourceFromHBitmap (ptr, IntPtr. zero, Int32Rect. empty, System. windows. media. imaging. bitmapSizeOptions. fromEmptyOptions (); DeleteObject (ptr); return source ;}catch {return null ;}// obtain the thumbnail public BitmapSource GetBitImage (string imageLink ){//" http://172.17.1.231:8083/3050273262379466760/2017/05/28/09/340800100999/09163448402.jpg?fid=1267520 "If (imageLink. startsWith ("http: //") {return GetImageHttp (imageLink, 200);} // else if (imageLink. startsWith ("ftp: //") {return GetImageFtp (imageLink, 200) ;}// obtain the original public BitmapSource GetHightBitImage (string imageLink ){//" http://172.17.1.231:8083/3050273262379466760/2017/05/28/09/340800100999/09163448402.jpg?fid=1267520 "If (imageLink. startsWith ("http: //") {return GetImageHttp (imageLink, 0);} // else if (imageLink. startsWith ("ftp: //") {return GetImageFtp (imageLink, 0 );}}}

View Code