HttpWebRequest.UserAgent Property

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

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

public string UserAgent { get; set; }

Property Value

Type: System.String
The value of the User-agent HTTP header. The default value is null.
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 = 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();
// Create a new 'HttpWebRequest' object to the mentioned URL.
HttpWebRequest* myHttpWebRequest =
   dynamic_cast<HttpWebRequest*>(WebRequest::Create(S"http://www.contoso.com"));
myHttpWebRequest->UserAgent = S".NET Framework Test Client";
// Assign the response object of 'HttpWebRequest' to a 'HttpWebResponse' variable.
HttpWebResponse* myHttpWebResponse =
   dynamic_cast<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(S"\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 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, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0
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