The follow http post request send data using multipart/form-data content type.
-----------------------------27311326571405\r\nContent-Disposition: form-data; name="list"\r\n\r\n8274184\r\n-----------------------------27311326571405\r\nContent-Disposition: form-data; name="list"\r\n\r\n8274174\r\n-----------------------------27311326571405\r\nContent-Disposition: form-data; name="list"\r\n\r\n8274178\r\n-----------------------------27311326571405\r\nContent-Disposition: form-data; name="antirobot"\r\n\r\n2341234\r\n-----------------------------27311326571405\r\nContent-Disposition: form-data; name="votehidden"\r\n\r\n1\r\n-----------------------------27311326571405--\r\n
List is an input name. 8274184, 8274174, 8274178 etc are input value. But what is 27311326571405, 27311326571405...etc? I want to send same request using c# but i really donnt know where i can to get this numbers.
---27311326571405
is called boundary and it is a random string that should never appear in the data you are sending and is used as separator between the values.
Here's an example of sending such a request to a given address:
class Program
{
static void Main()
{
var data = new List<KeyValuePair<string, string>>(new[]
{
new KeyValuePair<string, string>("list", "8274184"),
new KeyValuePair<string, string>("list", "8274174"),
new KeyValuePair<string, string>("list", "8274178"),
new KeyValuePair<string, string>("antirobot", "2341234"),
new KeyValuePair<string, string>("votehidden", "1"),
});
string boundary = "----MyAppBoundary" + DateTime.Now.Ticks.ToString("x");
var request = (HttpWebRequest)WebRequest.Create("http://example.com");
request.ContentType = "multipart/form-data; boundary=" + boundary;
request.Method = "POST";
using (var requestStream = request.GetRequestStream())
using (var writer = new StreamWriter(requestStream))
{
foreach (var item in data)
{
writer.WriteLine("--" + boundary);
writer.WriteLine(string.Format("Content-Disposition: form-data; name=\"{0}\"", item.Key));
writer.WriteLine();
writer.WriteLine(item.Value);
}
writer.WriteLine(boundary + "--");
}
using (var response = request.GetResponse())
using (var responseStream = response.GetResponseStream())
using (var reader = new StreamReader(responseStream))
{
Console.WriteLine(reader.ReadToEnd());
}
}
}
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