How to add parameters into a WebRequest

Question

I need to call a method from a webservice  so I ve written this code    private string urlPath    http   xxx xxx xxx manager     string request   urlPath    index php org get org form    WebRequest webRequest   WebRequest Create request    webRequest Method    POST    webRequest ContentType    application x-www-form-urlencoded    webRequest   webRequest ContentLength   0   WebResponse webResponse   webRequest GetResponse      But this method requires some parameters  as following   Post data    username  API USER              api authentication username   password  API PASSWORD          api authentication password   How can I add these parameters into this Webrequest   Thanks in advance

User · Answer

The code below differs from all other code because at the end it prints the response string in the console that the request returns  I learned in previous posts that the user doesn t get the response Stream and displays it       Visual Basic Implementation Request and Response String   Dim params    key1 value1 amp key2 value2      Dim byteArray   UTF8 GetBytes params      Dim url    https   okay com      Dim client   WebRequest Create url      client Method    POST      client ContentType    application x-www-form-urlencoded      client ContentLength   byteArray Length     Dim stream   client GetRequestStream          sending the data     stream Write byteArray  0  byteArray Length      stream Close      getting the full response in a stream         Dim response   client GetResponse   GetResponseStream      reading the response  Dim result   New StreamReader response     Writes response string to Console     Console WriteLine result ReadToEnd        Console ReadKey

User · Answer

For doing FORM posts  the best way is to use WebClient UploadValues   with a POST method

User · Answer

If these are the parameters of url-string then you need to add them through     and   amp   chars  for example http   example com index aspx username Api user amp password Api password   If these are the parameters of POST request  then you need to create POST data and write it to request stream  Here is sample method   private static string doRequestWithBytesPostData string requestUri  string method  byte   postData                                          CookieContainer cookieContainer                                          string userAgent  string acceptHeaderString                                          string referer                                          string contentType  out string responseUri                        var result                   if   string IsNullOrEmpty requestUri                                 var request   WebRequest Create requestUri  as HttpWebRequest                  if  request    null                                        request KeepAlive   true                      var cachePolicy   new RequestCachePolicy RequestCacheLevel BypassCache                       request CachePolicy   cachePolicy                      request Expect   null                      if   string IsNullOrEmpty method                           request Method   method                      if   string IsNullOrEmpty acceptHeaderString                           request Accept   acceptHeaderString                      if   string IsNullOrEmpty referer                           request Referer   referer                      if   string IsNullOrEmpty contentType                           request ContentType   contentType                      if   string IsNullOrEmpty userAgent                           request UserAgent   userAgent                      if  cookieContainer    null                          request CookieContainer   cookieContainer                       request Timeout   Constants RequestTimeOut                       if  request Method     POST                                                 if  postData    null                                                        request ContentLength   postData Length                              using  var dataStream   request GetRequestStream                                                                  dataStream Write postData  0  postData Length                                                                                                      using  var httpWebResponse   request GetResponse   as HttpWebResponse                                                if  httpWebResponse    null                                                        responseUri   httpWebResponse ResponseUri AbsoluteUri                              cookieContainer Add httpWebResponse Cookies                               using  var streamReader   new StreamReader httpWebResponse GetResponseStream                                                                   result   streamReader ReadToEnd                                                              return result                                                                                              responseUri   null              return null

User · Answer

Use stream to write content to webrequest  string data    username  lt value gt  amp password  lt value gt      replace  lt value gt  byte   dataStream   Encoding UTF8 GetBytes data   private string urlPath    http   xxx xxx xxx manager    string request   urlPath    index php org get org form   WebRequest webRequest   WebRequest Create request   webRequest Method    POST   webRequest ContentType    application x-www-form-urlencoded   webRequest ContentLength   dataStream Length    Stream newStream webRequest GetRequestStream       Send the data  newStream Write dataStream 0 dataStream Length   newStream Close    WebResponse webResponse   webRequest GetResponse

User · Answer

I have a feeling that the username and password that you are sending should be part of the Authorization Header   So the code below shows you how to create the Base64 string of the username and password   I also included an example of sending the POST data   In my case it was a phone number parameter   string credentials   Convert ToBase64String Encoding ASCII GetBytes  username          password     HttpWebRequest webRequest    HttpWebRequest WebRequest Create Request   webRequest Headers Add  Authorization   string Format  Basic  0    credentials    webRequest ContentType    application x-www-form-urlencoded   webRequest Method   WebRequestMethods Http Post  webRequest AllowAutoRedirect   true  webRequest Proxy   null   string data    phone number 19735559042    byte   dataStream   Encoding UTF8 GetBytes data    request ContentLength   dataStream Length  Stream newStream   webRequest GetRequestStream    newStream Write dataStream  0  dataStream Length   newStream Close     HttpWebResponse response    HttpWebResponse webRequest GetResponse    Stream stream   response GetResponseStream    StreamReader streamreader   new StreamReader stream   string s   streamreader ReadToEnd

User · Answer

Hope this works  webRequest Credentials  new NetworkCredential  API User   API Password

[c#] How to add parameters into a WebRequest?

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