C#cs and BS Data request Exchange

C#cs sending an HTTP GET request

try {WebRequest req = webrequest.create ("Http://127.0.0.1/test/loginsso.aspx?username=admin&amp                ;p assword=admin "); Req.   Method = "POST"; Specify the method to be submitted, which can be post and get, be sure to capitalize//byte[] PostData = System.Text.Encoding.GetEncoding ("GBK"). GetBytes ("? Username=admin&password=admin");//post data//req.                ContentLength = Postdata.length; Stream Poststream = req.                GetRequestStream ();                Poststream.write (postdata, 0, postdata.length);                Poststream.close (); WebResponse res = req.                GetResponse ();  System.Text.Encoding resencoding = System.Text.Encoding.GetEncoding ("Utf-8");//received encoding StreamReader reader = New StreamReader (Res.                GetResponseStream (), resencoding); string html = reader.     ReadToEnd ();                Received HTML MessageBox.Show ("=========" + html); Reader.                Close (); Res.            Close ();         }   catch (Exception ex) {MessageBox.Show ("error"); }

. NET receive get send request

response.contentencoding = encoding.getencoding ("UTF-8");            String username = request["username"];            string password = request["password"];            if (username! = "" && username = = "Admin" && Password! = "" && password = = "Admin")            {                Resp Onse. Write ("Success");            }            else            {                Response.Write ("error" + Request.Url.Host);               Response.Redirect ("http://www.g.cn");          }

. NET receive after request

System.Text.Encoding resencoding = System.Text.Encoding.GetEncoding ("Utf-8");//received encoding                StreamReader reader = new StreamReader (Request.inputstream, resencoding);                String msg = reader. ReadToEnd ();                Reader. Close ();

C#cs Send picture attachment

C # code

if (! TextBox_fileName.Text.Trim (). Equals (""))              {                  string loadfile = TextBox_fileName.Text.Trim ();                  String file name = loadfile.substring (loadfile.lastindexof ("\ \") +1,loadfile.length-1-loadfile.lastindexof ("\ \"));                  String urlstr = @ "http://127.0.0.1/test/UploadFile.aspx?name="  + file name;                  Uploadfilebinary (of Loadfile,urlstr);              }              Other              {                  string alstr =  "You have not selected the file";                  MessageBox.Show (ALSTR, "system hint", messageboxbuttons.ok,messageboxicon.exclamation,messageboxdefaultbutton.button1);              }

C # code

Public invalid Uploadfilebinary (string localfile, String uploadurl) {try {RDR's F                  Ilestream = new FileStream (Localfile,filemode.open);                   byte [] = INDATA new byte [4096];                  INT totbytes = 0;                  PostData of the MemoryStream = new MemoryStream (); INT Read action = rdr.                  Read (indata,0,indata.length);                      and (Read motion > 0) {postdata.write (indata,0, read action); Read action = rdr.                      Read (indata,0,indata.length);                  Totbytes + = read action; } rdr.                  Close ();                  postdata.position = 0;                  Req of HttpWebRequest = (HttpWebRequest) webrequest.create (Uploadurl); Req.                  Method = "POST"; Req.                  ContentLength = (long) postdata.length; Use (stream s = req.       GetRequestStream ()) {S.write (Postdata.toarray (), 0, (INT) postdata.length);               Postdata.close (); } WebResponse Class resp = req.                  GetResponse (); System.Text.Encoding resencoding = System.Text.Encoding.GetEncoding ("UTF-8");                  Reader of the received encoding StreamReader = new StreamReader (Resp.getresponsestream (), resencoding); String msg = reader.                  ReadToEnd (); Reader.                  Close (); Resp.                  Close (); if (msg! = null && MSG.                  Equals ("Success")) {MessageBox.Show ("image upload succeeded", "hint");                  }} catch (before exception) {//String excontent; Excontent = ex.                  ToString (); MessageBox.Show ("Upload failed network exception or image file already exists!")                "," prompt "); }            }

. NET Receive picture attachment file

C # code

response.contentencoding = encoding.getencoding ("UTF-8");                 Place user code here to initialize page              bytes [] Nautical chart =  0;              string Ls_name;              if (Request.ServerVariables ["Request_method"] ToString (). ToUpper () = = "POST")              {               Nautical chart = request.binaryread (request.contentlength);                Get the file name               ls_name = request.querystring ["name"];                        String picname = DateTime.Now.Ticks.ToString () + character ". gif";                 String picname = DateTime.Now.Ticks.ToString () + ". JPG ";               STM filestream =  new FileStream (using Server.MapPath (a "uploadfile/" + ls_name), System.IO.FileMode.CreateNew);               Stm. Write (nautical chart, 0, (INT) thedata.length);               Stm. Close ();               Response.Write ("Success");               }               Other               {                 Response.Write ("error");               }

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