WebHeaderCollection.GetKey(Int32) Method
Definition
Important
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Gets the header name at the specified position in the collection.
public:
override System::String ^ GetKey(int index);
public override string GetKey (int index);
override this.GetKey : int -> string
Public Overrides Function GetKey (index As Integer) As String
Parameters
- index
- Int32
The zero-based index of the key to get from the collection.
Returns
A String holding the header name.
Exceptions
Examples
The following code example uses GetKey to get a header name in a WebHeaderCollection.
if (args.Length == 0)
{
Console.WriteLine("must specify a URL!");
return;
}
string server = args[0];
// Create the web request
HttpWebRequest myHttpWebRequest =
(HttpWebRequest) WebRequest.Create(server);
myHttpWebRequest.Timeout = 1000;
// Get the associated response for the above request.
HttpWebResponse myHttpWebResponse =
(HttpWebResponse) myHttpWebRequest.GetResponse();
// Get the headers associated with the response.
WebHeaderCollection myWebHeaderCollection =
myHttpWebResponse.Headers;
for(int i = 0; i < myWebHeaderCollection.Count; i++)
{
String header = myWebHeaderCollection.GetKey(i);
String[] values =
myWebHeaderCollection.GetValues(header);
if(values.Length > 0)
{
Console.WriteLine("The values of {0} header are : "
, header);
for(int j = 0; j < values.Length; j++)
Console.WriteLine("\t{0}", values[j]);
}
else
Console.WriteLine("There is no value associated" +
"with the header");
}
Console.WriteLine("");
// Get the headers again, using new properties (Keys,
// AllKeys, Clear) and methods (Get and GetKey)
string[] headers = myWebHeaderCollection.AllKeys;
// enumerate through the header collection.
foreach (string s in headers)
{
Console.WriteLine("Header {0}, value {1}",
s,
myWebHeaderCollection.Get(s) );
}
Console.WriteLine("");
// show the use of Get(Int32) and GetValue(Int32)
if (myWebHeaderCollection.Count > 0)
{
// get the name and value of the first header
int index=0;
Console.WriteLine("Header {0}: name {1}, value {2}",
index,
myWebHeaderCollection.GetKey(index),
myWebHeaderCollection.Get(index));
}
myWebHeaderCollection.Clear();
myHttpWebResponse.Close();
Applies to
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