WebHeaderCollection.Add Inserts the specified header into the collection.
using System; using System.Net; using System.Net.Sockets; using System.Text; class MainClass { public static void Main() { HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create("http://www.msn.com"); WebHeaderCollection myWebHeaderCollection = myHttpWebRequest.Headers; myWebHeaderCollection.Add("Accept-Language:da"); myWebHeaderCollection.Add("Accept-Language", "en;q=0.8"); HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse(); myHttpWebResponse.Close(); } }