HttpListenerResponse::Headers Property
Gets or sets the collection of header name/value pairs returned by the server.
Assembly: System (in System.dll)
public: property WebHeaderCollection^ Headers { WebHeaderCollection^ get(); void set(WebHeaderCollection^ value); }
Property Value
Type: System.Net::WebHeaderCollection^A WebHeaderCollection instance that contains all the explicitly set HTTP headers to be included in the response.
| Exception | Condition |
|---|---|
| InvalidOperationException | The WebHeaderCollection instance specified for a set operation is not valid for a response. |
Response headers contain metadata information such as the date and time of the response, the identity of the responding server, and the MIME type of the data contained in the response body.
For a complete list of response headers, see the HttpResponseHeader enumeration.
Note |
|---|
If you attempt to set a Content-Length, Keep-Alive, Transfer-Encoding, or WWW-Authenticate header using the Headers property, an exception will be thrown. Use the KeepAlive or ContentLength64 properties to set these headers. You cannot set the Transfer-Encoding or WWW-Authenticate headers manually. |
The following code example demonstrates displaying the headers in a WebHeaderCollection.
// Displays the header information that accompanied a request.
public static void DisplayWebHeaderCollection(HttpListenerResponse response)
{
WebHeaderCollection headers = response.Headers;
// Get each header and display each value.
foreach (string key in headers.AllKeys)
{
string[] values = headers.GetValues(key);
if(values.Length > 0)
{
Console.WriteLine("The values of the {0} header are: ", key);
foreach (string value in values)
{
Console.WriteLine(" {0}", value);
}
}
else
Console.WriteLine("There is no value associated with the header.");
}
}
Available since 2.0
