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HttpWebRequest.UserAgent Property

Gets or sets the value of the User-agent HTTP header.

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

public:
property String^ UserAgent {
	String^ get ();
	void set (String^ value);
}
/** @property */
public String get_UserAgent ()

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

public function get UserAgent () : String

public function set UserAgent (value : String)

Property Value

The value of the User-agent HTTP header. The default value is 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 UserAgent property.

// Create a new 'HttpWebRequest' object to the mentioned URL.
HttpWebRequest^ myHttpWebRequest = (HttpWebRequest^)( WebRequest::Create( "http://www.contoso.com" ) );
myHttpWebRequest->UserAgent = ".NET Framework Test Client";
// 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 = gcnew StreamReader( streamResponse );
array<Char>^ readBuff = gcnew array<Char>(256);
int count = streamRead->Read( readBuff, 0, 256 );
Console::WriteLine( "\nThe contents of HTML Page are :\n" );
while ( count > 0 )
{
   String^ outputData = gcnew String( readBuff,0,count );
   Console::Write( outputData );
   count = streamRead->Read( readBuff, 0, 256 );
}
streamRead->Close();
streamResponse->Close();
myHttpWebResponse->Close();

// Create a new 'HttpWebRequest' object to the mentioned URL.
HttpWebRequest myHttpWebRequest = ((HttpWebRequest)
    WebRequest.Create("http://www.contoso.com"));
myHttpWebRequest.set_UserAgent(".NET Framework Test Client");
// 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 readBuff[] = new char[256];
int count = streamRead.Read(readBuff, 0, 256);

Console.WriteLine("\nThe contents of HTML Page are :\n");
while (count > 0) {
    String outputData = new String(readBuff, 0, count);
    Console.Write(outputData);
    count = streamRead.Read(readBuff, 0, 256);
}

// Release the response object resources.
streamRead.Close();
streamResponse.Close();
myHttpWebResponse.Close();

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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