Sending HTTP POST with System Net WebClient

Question

Is it possible to send HTTP POST with some form data with System Net WebClient   If not  is there another library like WebClient that can do HTTP POST  I know I can use System Net HttpWebRequest  but I m looking for something that is not as verbose   Hopefully it will look like this   Using client As New TheHTTPLib     client FormData  parm1      somevalue      result   client DownloadString someurl  Method POST  End Using

User · Answer

WebClient doesn t have a direct support for form data  but you can send a HTTP post by using the UploadString method   Using client as new WebClient     result   client UploadString someurl   param1 somevalue amp param2 othervalue   End Using

User · Answer

As far as the http verb is concerned the WebRequest might be easier  You could go for something like       WebRequest r   WebRequest Create  http   some url        r Method    POST       using  var s   r GetResponse   GetResponseStream                  using  var reader   new StreamReader r  FileMode Open                         var content   reader ReadToEnd                      Obviously this lacks exception handling and writing the request body  for which you can use r GetRequestStream   and write it like a regular stream  but I hope it may be of some help

User · Answer

Based on  carlosfigueira  s answer  I looked further into WebClient s methods and found UploadValues  which is exactly what I want   Using client As New Net WebClient     Dim reqparm As New Specialized NameValueCollection     reqparm Add  param1    somevalue       reqparm Add  param2    othervalue       Dim responsebytes   client UploadValues someurl   POST   reqparm      Dim responsebody    New Text UTF8Encoding  GetString responsebytes  End Using   The key part is this   client UploadValues someurl   POST   reqparm    It sends whatever verb I type in  and it also helps me create a properly url encoded form data  I just have to supply the parameters as a namevaluecollection

[.net] Sending HTTP POST with System.Net.WebClient

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