HttpWebRequest Example Using "GET" [Answered]RSS

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  DeskingFan

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  HttpWebRequest Example Using "GET"

  Nov 05, 2007 12:36 PM|DeskingFan|LINK

  Hi All,

  My classic asp application uses XML Templates to retrieve an XML document via SQL Server 2000 and the MSXML2.ServerXMLHTTP.4.0 object.  I need to convert this to asp.net in c# and need to find a good example that will help me accomplish this.  I see a lot of examples using POST and the HttpWebRequest object but I need a simple example using httpWebRequest.Mehod = "GET" to load the XML document created by the SQL Server 2000 XML Template.

  I've been unsuccessful searching on the web.

  Thanks.

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  foreachbiscu...

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  Re: HttpWebRequest Example Using "GET"

  Nov 06, 2007 01:33 PM|foreachbiscuit|LINK

   Have you tried using the HttpWebResponse stream?
   

  HttpWebRequest request = (HttpWebRequest) WebRequest.Create(url);
  HttpWebResponse response = (HttpWebResponse) request.GetResponse();
  
  Stream stream = new Stream(response.GetResponseStream());

   obviously you can use any class that derives from stream - whatever is appropriate for the response.
  See this msdn link for more information:

   HttpWebResponse.GetResponseStream Method

  Regards,
  foreachbiscuit
  blog @ http://foreachbiscuit.wordpress.com
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  DeskingFan

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  Re: HttpWebRequest Example Using "GET"

  Nov 06, 2007 02:03 PM|DeskingFan|LINK

  Thanks for your suggestion, I actually got this to work yesterday afternoon.  Here is the solution: 

          public static XmlDocument getXMLDocumentFromXMLTemplate(string inURL)
          {
              HttpWebRequest myHttpWebRequest = null;     //Declare an HTTP-specific implementation of the WebRequest class.
              HttpWebResponse myHttpWebResponse = null;   //Declare an HTTP-specific implementation of the WebResponse class
              XmlDocument myXMLDocument = null;           //Declare XMLResponse document
              XmlTextReader myXMLReader = null;           //Declare XMLReader

              try
              {
                  //Create Request
                  myHttpWebRequest = (HttpWebRequest) HttpWebRequest.Create(inURL);
                  myHttpWebRequest.Method = "GET";
                  myHttpWebRequest.ContentType = "text/xml; encoding='utf-8'";

                  //Get Response
                  myHttpWebResponse = (HttpWebResponse) myHttpWebRequest.GetResponse();

                  //Now load the XML Document
                  myXMLDocument = new XmlDocument();

                  //Load response stream into XMLReader
                  myXMLReader = new XmlTextReader(myHttpWebResponse.GetResponseStream());
                  myXMLDocument.Load(myXMLReader);
              }
              catch (Exception myException)
              {
                  throw new Exception("Error Occurred in AuditAdapter.getXMLDocumentFromXMLTemplate()", myException);
              }
              finally
              {
                  myHttpWebRequest = null;
                  myHttpWebResponse = null;
                  myXMLReader = null;
              }
              return myXMLDocument;
          }

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  pbromberg

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  Re: HttpWebRequest Example Using "GET"

  Nov 06, 2007 02:50 PM|pbromberg|LINK

  You can do all of this in 2 lines of code:

  XmlDocument  myXMLDocument = new XmlDocument();

  myXMLDocument.Load(url);

   

  [C# MVP]
  <a href="http://peterbromberg.net>PeterBromberg.net
• • Reply
  DeskingFan

  Member

  4 Points

  47 Posts

  Re: HttpWebRequest Example Using "GET"

  Nov 06, 2007 03:53 PM|DeskingFan|LINK

  Thanks, that also worked and so much less code..

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  bkthomson

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  38 Posts

  Re: HttpWebRequest Example Using "GET"

  Jul 23, 2008 10:06 AM|bkthomson|LINK

  I'm trying to do something similar to the client-side XMLHttpRequest object where I call a web page in my site and pull back the rendered HTML.

  I reviewed the thread took the two working example. . in both cases I'm still having problems.

  1) With the XMLDocument example

   

  XmlDocument  myXMLDocument = new XmlDocument();
  
  try
  {
  	myXMLDocument.Load(Page.ResolveUrl("Collect.aspx") );
  }
  catch (Exception ex)
  {
  	System.Diagnostics.Debug.WriteLine( ex.Message );
  }

   I get receive the following error: "Could not find a part of the path \"C:\\OpenPointOne\\XMLHttpRequest\\Collect.aspx\"."

  When I pull the Page.ResolveURL and just call "Collect.aspx" I receive "Could not find file \"C:\\WINDOWS\\system32\\Collect.aspx\"."
  

  I also attempted to use the public static XmlDocument getXMLDocumentFromXMLTemplate(string inURL)

  but the errors come out like 

  myException.Message
  "Invalid URI: The format of the URI could not be determined."
  inURL
  "/OpenPointOne/XMLHttpRequest/Collect.aspx"

  Any other suggestions?
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  Marky2245

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  Re: HttpWebRequest Example Using "GET"

  Aug 25, 2011 08:17 AM|Marky2245|LINK

  I'm trying to change the URI using the get method, basically I want to send commands to a DVI switch

  Am I right by using HttpWebRequest

  HttpWebRequest^ myReq = dynamic_cast<HttpWebRequest^>(WebRequest::Create( m_DVIswitch ));
                  
                              
                  // Set 'Method' property of 'HttpWebRequest' class to POST.
                  myReq->Method = "GET";
                  ASCIIEncoding^ encodedData = gcnew ASCIIEncoding;
                  array<Byte>^ byteArray = encodedData->GetBytes( m_SysString );
                  // Set 'ContentType' property of the 'HttpWebRequest' class to S"application/x-www-form-urlencoded".
                  myReq->ContentType = "application/x-www-form-urlencoded";
                  
                  myReq->ContentLength = byteArray->Length;
                  Stream^ newStream = myReq->GetRequestStream();
              //     Uri^ myUri = gcnew Uri(uriString);
  //        //         myUri =myReq->RequestUri();
  
                  newStream->Write( postArray, 0, byteArray->Length );
                  //Console::WriteLine( "\nData has been posted to the Uri\n\nPlease wait for the response.........." );
                   // Assign the response object of 'HttpWebRequest' to a 'HttpWebResponse' variable.
                  HttpWebResponse^ myResponce = (HttpWebResponse^)( myReq->GetResponse() );