C#: Http post

[rajeeshun]

Dear all,

This is my first post in this forum.

I am writing a small module for my company that send XML data to a gateway (Asp page) and get the response in XML format

I have to send the data (request) in XML format to a web site and need to get the response for the request
First I tried with Webclient (System.Net.WebClient) with following codes

Client.UploadFile("http://sample_site/upload.aspx", @"C://Regsitering_Data.xml");
Client.DownloadFile("http://sample_site/downloaddata.aspx","C:\\Responses.asp")
 
 

However, this way I managed to post the data. I checked with the gateway people and they confirmed that my request is correct and the webservice has sent the response correctly. However I am not able to get the response from there.

I know that I am doing wrong. I tried with HttpWebRequest and HttpWebResponse, but I dont know how to post XML data into the with using
HttpWebRequest

Please help me on this. Is there any way that I can send a request to website along with XML data

[Plater]

You have to do a bit more work (I think) with HttpWebRequest.
MSDN has an example about posting data.
You would create it, set the method type to POST, then you would need to read in the XML data into a string (I think), tell the HttpWebRequest the length of the string and then use the request stream to dump the XML data into it.

[rajeeshun]

I have done the work. Got some samples thescripts and other sites

Thanks to all

 private void button2_Click(object sender, EventArgs e)
        {
            WebRequest myRequest = null;
            WebResponse myResponse = null;
 
            try
            {
                string Page;
                string outputst;
                string fileName = "C:\\Regsitering_Data.xml";
                string uri = "https://secure.abcdef.com/xmlautomation/Upload.aspx";
                myRequest = WebRequest.Create(uri);
                // Post method
                myRequest.Method = "POST";
                // content type
                myRequest.ContentType = "text/xml"; 
                // Wrap the request stream with a text-based writer
                StreamWriter writer = new StreamWriter(myRequest.GetRequestStream());
                // Write the xml text into the stream
                writer.WriteLine(this.GetTextFromXMLFile(fileName));
                writer.Close();
                // Send the data to the webserver
                myResponse = myRequest.GetResponse();
                Stream str = myResponse.GetResponseStream();
                StreamReader strReader = new StreamReader(str);
                outputst = "";
                while ((Page = strReader.ReadLine()) != null)
                {
                    outputst = outputst + Page;
                }
            }
            catch (Exception Ex)
            {
                MessageBox.Show(Ex.Message.ToString());
            }
        }
private string GetTextFromXMLFile(string file)
        {
            StreamReader reader = new StreamReader(file);
            string ret = reader.ReadToEnd();
            reader.Close();
            return ret;
        }

[Plater]

If you need more controll the
WebRequest and WebResponse
Can be explicitly cast as
HttpWebRequest and HttpWebResponse