Mega Code Archive
0593 Uploading Form Data
<![CDATA[
WebClient provides UploadValues methods for posting data to an HTML form.
Here's how to query the Safari website for books containing the term "WebClient":
using System;
using System.Net;
using System.Threading;
class ThreadTest
{
static void Main()
{
WebClient wc = new WebClient();
wc.Proxy = null;
var data = new System.Collections.Specialized.NameValueCollection();
data.Add("searchtextbox", "webclient");
data.Add("searchmode", "simple");
byte[] result = wc.UploadValues("http://my.safaribooksonline.com/search", "POST", data);
System.IO.File.WriteAllBytes("SearchResults.html", result);
System.Diagnostics.Process.Start("SearchResults.html");
}
}
Here's the previous example written with WebRequest:
using System;
using System.Net;
using System.Threading;
using System.IO;
using System.Text;
class ThreadTest
{
static void Main()
{
WebRequest req = WebRequest.Create("http://www.yourDomain.com/search");
req.Proxy = null;
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
string reqString = "searchtextbox=webclient&searchmode=simple";
byte[] reqData = Encoding.UTF8.GetBytes(reqString);
req.ContentLength = reqData.Length;
using (Stream reqStream = req.GetRequestStream())
reqStream.Write(reqData, 0, reqData.Length);
using (WebResponse res = req.GetResponse())
using (Stream resSteam = res.GetResponseStream())
using (StreamReader sr = new StreamReader(resSteam))
File.WriteAllText("SearchResults.html", sr.ReadToEnd());
System.Diagnostics.Process.Start("SearchResults.html");
}
}
]]>