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HttpWebRequest.Referer Property

Gets or sets the value of the Referer HTTP header.

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

'Declaration
Public Property Referer As String
'Usage
Dim instance As HttpWebRequest
Dim value As String

value = instance.Referer

instance.Referer = value
/** @property */
public String get_Referer ()

/** @property */
public void set_Referer (String value)

public function get Referer () : String

public function set Referer (value : String)

Property Value

The value of the Referer HTTP header. The default value is a null reference (Nothing in Visual Basic).

If the AllowAutoRedirect property is true, the Referer property is set automatically when the request is redirected to another site.

To clear the Referer HTTP header, set the Referer property to a null reference (Nothing in Visual Basic).

NoteNote

The value for this property is stored in WebHeaderCollection. If WebHeaderCollection is set, the property value is lost.

The following code example sets the Referer property.

' Create a 'HttpWebRequest' object.
Dim myHttpWebRequest As HttpWebRequest = CType(WebRequest.Create(myUri), HttpWebRequest)
' Referer property is set to http://www.microsoft.com
myHttpWebRequest.Referer = "http://www.microsoft.com"
' The response object of 'HttpWebRequest' is assigned to a 'HttpWebResponse' variable.
Dim myHttpWebResponse As HttpWebResponse = CType(myHttpWebRequest.GetResponse(), HttpWebResponse)
' Displaying the contents of the page to the console
Dim streamResponse As Stream = myHttpWebResponse.GetResponseStream()
Dim streamRead As New StreamReader(streamResponse)
Dim readBuffer(256) As [Char]
Dim count As Integer = streamRead.Read(readBuffer, 0, 256)
Console.WriteLine(ControlChars.Cr + "The contents of HTML page are.......")
While count > 0
    Dim outputData As New [String](readBuffer, 0, count)
    Console.Write(outputData)
    count = streamRead.Read(readBuffer, 0, 256)
End While
Console.WriteLine(ControlChars.Cr + "HTTP Request  Headers :" + ControlChars.Cr + ControlChars.Cr + "{0}", myHttpWebRequest.Headers)
Console.WriteLine(ControlChars.Cr + "HTTP Response Headers :" + ControlChars.Cr + ControlChars.Cr + "{0}", myHttpWebResponse.Headers)
' Release the response object resources.
streamRead.Close()
 streamResponse.Close()
myHttpWebResponse.Close()
Console.WriteLine("Referer to the site is:{0}", myHttpWebRequest.Referer)

// Create a 'HttpWebRequest' object.
HttpWebRequest myHttpWebRequest = (HttpWebRequest)
    WebRequest.Create(myUri);
// Set referer property  to http://www.microsoft.com.
myHttpWebRequest.set_Referer("http://www.microsoft.com");

// Assign the response object of 'HttpWebRequest' to a 
//'HttpWebResponse' variable.
HttpWebResponse myHttpWebResponse = (HttpWebResponse)
    myHttpWebRequest.GetResponse();

// Display the contents of the page to the console.
Stream streamResponse = myHttpWebResponse.GetResponseStream();
StreamReader streamRead = new StreamReader(streamResponse);
char readBuffer[] = new char[256];
int count = streamRead.Read(readBuffer, 0, 256);

Console.WriteLine("\nThe contents of HTML page are.......");
while (count > 0) {
    String outputData = new String(readBuffer, 0, count);
    Console.Write(outputData);
    count = streamRead.Read(readBuffer, 0, 256);
}
Console.WriteLine("\nHTTP Request  Headers :\n\n{0}", 
    myHttpWebRequest.get_Headers());
Console.WriteLine("\nHTTP Response Headers :\n\n{0}", 
    myHttpWebResponse.get_Headers());
streamRead.Close();
streamResponse.Close();

// Release the response object resources.
myHttpWebResponse.Close();
Console.WriteLine("Referer to the site is:{0}", 
    myHttpWebRequest.get_Referer());

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

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