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HttpRequest.Headers Property

Gets a collection of HTTP headers.

Namespace: System.Web
Assembly: System.Web (in system.web.dll)

public NameValueCollection Headers { get; }
/** @property */
public NameValueCollection get_Headers ()

public function get Headers () : NameValueCollection

Property Value

A NameValueCollection of headers.

The following code example displays the names and values of all headers in the HTTP request.

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>");
   }
}
   

int loop1, loop2;
NameValueCollection coll;

// Load Header collection into NameValueCollection object.
coll = get_Request().get_Headers();

// Put the names of all keys into a string array.
String arr1[] = coll.get_AllKeys();
for (loop1 = 0; loop1 < arr1.length; loop1++) {
    get_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++) {
        get_Response().Write(("Value " + loop2 + ": "
            + get_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 98, Windows 2000 SP4, 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

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