Gets a collection of HTTP headers.
(in System.Web.dll)
Visual Basic (Declaration)
Public ReadOnly Property Headers As NameValueCollection
Dim instance As HttpRequest
Dim value As NameValueCollection
value = instance.Headers
public NameValueCollection Headers { get; }
public:
property NameValueCollection^ Headers {
NameValueCollection^ get ();
}
public function get Headers () : NameValueCollection
For a listing of all possible headers, see Request Header Fields on the W3C Web site.
The following code example displays the names and values of all headers in the HTTP request.
Dim loop1, loop2 As Integer
Dim arr1(), arr2() As String
Dim coll As NameValueCollection
' Load Header collection into NameValueCollection object.
coll=Request.Headers
' Put the names of all keys into a string array.
arr1 = coll.AllKeys
For loop1 = 0 To arr1.GetUpperBound(0)
Response.Write("Key: " & arr1(loop1) & "<br>")
arr2 = coll.GetValues(loop1)
' Get all values under this key.
For loop2 = 0 To arr2.GetUpperBound(0)
Response.Write("Value " & CStr(loop2) & ": " & Server.HtmlEncode(arr2(loop2)) & "<br>")
Next loop2
Next loop1
int loop1, loop2;
NameValueCollection coll;
// Load Header collection into NameValueCollection object.
coll=Request.Headers;
// Put the names of all keys into a string array.
String[] arr1 = coll.AllKeys;
for (loop1 = 0; loop1<arr1.Length; loop1++)
{
Response.Write("Key: " + arr1[loop1] + "<br>");
// Get all values under this key.
String[] arr2=coll.GetValues(arr1[loop1]);
for (loop2 = 0; loop2<arr2.Length; loop2++)
{
Response.Write("Value " + loop2 + ": " + Server.HtmlEncode(arr2[loop2]) + "<br>");
}
}
var arr1, arr2 : String[]
var coll : NameValueCollection
coll=Request.Headers // Load Header collection into NameValueCollection object.
arr1 = coll.AllKeys // Put names of all keys into a string array.
for(var i=0; i < arr1.Length; i++){
Response.Write("Key: " + arr1[i] + "<br>")
arr2 = coll.GetValues(i) // Get all values under this key.
for(var j=0; j < arr2.Length; j++){
Response.Write("Value " + j + ": " + Server.HtmlEncode(arr2[j]) + "<br>")
}
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference