Export (0) Print
Expand All

HttpWebResponse.GetResponseHeader Method

Gets the contents of a header that was returned with the response.

Namespace: System.Net
Assembly: System (in system.dll)

public string GetResponseHeader (
	string headerName
)
public String GetResponseHeader (
	String headerName
)
public function GetResponseHeader (
	headerName : String
) : String

Parameters

headerName

The header value to return.

Return Value

The contents of the specified header.

Exception typeCondition

ObjectDisposedException

The current instance has been disposed.

Use GetResponseHeader to retrieve the contents of particular headers. You must specify which header you want to return.

This example creates a Web request and queries for a response. If the site requires authentication, this example will respond with a challenge string. This string is extracted using GetResponseHeader.

   public static void GetPage(String url) 
	{
	try 
 			{	
				Uri ourUri = new Uri(url);
				// Creates an HttpWebRequest for the specified URL. 
				HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(ourUri); 
				HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
				Console.WriteLine("\nThe server did not issue any challenge.  Please try again with a protected resource URL.");
				// Releases the resources of the response.
				myHttpWebResponse.Close(); 
			} 
		catch(WebException e) 
		   {
			    HttpWebResponse response = (HttpWebResponse)e.Response;
				if (response != null)
				{
					if (response.StatusCode == HttpStatusCode.Unauthorized)
					{
						string challenge = null;
						challenge= response.GetResponseHeader("WWW-Authenticate");
						if (challenge != null)
							Console.WriteLine("\nThe following challenge was raised by the server:{0}",challenge);
					}
					else
						Console.WriteLine("\nThe following WebException was raised : {0}",e.Message);
				}
				else
					Console.WriteLine("\nResponse Received from server was null");

			}
		catch(Exception e)
		{
			Console.WriteLine("\nThe following Exception was raised : {0}",e.Message);
		}
	}
}

    public static void GetPage(String url)
    {
        try {
            Uri ourUri = new Uri(url);
            // Creates an HttpWebRequest for the specified URL. 
            HttpWebRequest myHttpWebRequest = (HttpWebRequest)
                WebRequest.Create(ourUri);
            HttpWebResponse myHttpWebResponse = (HttpWebResponse)
                myHttpWebRequest.GetResponse();
            Console.WriteLine("\nThe server did not issue any challenge.  "
                + "Please try again with a protected resource URL.");
            // Releases the resources of the response.
            myHttpWebResponse.Close();
        }
        catch (WebException e) {
            HttpWebResponse response = (HttpWebResponse)e.get_Response();
            if (response != null) {
                if (response.get_StatusCode().Equals(HttpStatusCode.
                    Unauthorized)) {
                    String challenge = null;
                    challenge = response.GetResponseHeader("WWW-Authenticate");
                    if (challenge != null) {
                        Console.WriteLine("\nThe following challenge was "
                            + "raised by the server:{0}", challenge);
                    }
                }
                else {
                    Console.WriteLine("\nThe following WebException "
                        + "was raised : {0}", e.get_Message());
                }
            }
            else {
                Console.WriteLine("\nResponse Received from server was null");
            }
        }
        catch (System.Exception e) {
            Console.WriteLine("\nThe following Exception was raised : {0}",
                e.get_Message());
        }
    } //GetPage
} //HttpWebResponseSnippet

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

Community Additions

ADD
Show:
© 2014 Microsoft