Export (0) Print
Expand All

HttpWebRequest.ProtocolVersion Property

Gets or sets the version of HTTP to use for the request.

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

public Version ProtocolVersion { get; set; }

Property Value

Type: System.Version
The HTTP version to use for the request. The default is HttpVersion.Version11.

ExceptionCondition
ArgumentException

The HTTP version is set to a value other than 1.0 or 1.1.

The HttpWebRequest class supports only versions 1.0 and 1.1 of HTTP. Setting ProtocolVersion to a different version throws an exception.

NoteNote:

To set the HTTP version of the current request, use the Version10 and Version11 fields of the HttpVersion class.

The following code example sets the ProtocolVersion Property.

			// Create a new 'HttpWebRequest' Object to the mentioned URL.
			HttpWebRequest myHttpWebRequest=(HttpWebRequest)WebRequest.Create("http://www.microsoft.com");
			// Use the existing 'ProtocolVersion' , and display it onto the console.	
			Console.WriteLine("\nThe 'ProtocolVersion' of the protocol used is {0}",myHttpWebRequest.ProtocolVersion);
			// Set the 'ProtocolVersion' property of the 'HttpWebRequest' to 'Version1.0' .
			myHttpWebRequest.ProtocolVersion=HttpVersion.Version10;
			 // Assign the response object of 'HttpWebRequest' to a 'HttpWebResponse' variable.
			 HttpWebResponse myHttpWebResponse=(HttpWebResponse)myHttpWebRequest.GetResponse();
			Console.WriteLine("\nThe 'ProtocolVersion' of the protocol changed to {0}",myHttpWebRequest.ProtocolVersion);
			Console.WriteLine("\nThe protocol version of the response object is {0}",myHttpWebResponse.ProtocolVersion);
// Create a new 'HttpWebRequest' Object to the mentioned URL.
HttpWebRequest* myHttpWebRequest =
   dynamic_cast<HttpWebRequest*>(WebRequest::Create(S"http://www.microsoft.com"));
// Use the existing 'ProtocolVersion' , and display it onto the console.
Console::WriteLine(S"\nThe 'ProtocolVersion' of the protocol used is {0}",
   myHttpWebRequest->ProtocolVersion);
// Set the 'ProtocolVersion' property of the 'HttpWebRequest' to 'Version1::0' .
myHttpWebRequest->ProtocolVersion = HttpVersion::Version10;

// Assign the response object of 'HttpWebRequest' to a 'HttpWebResponse' variable.
HttpWebResponse* myHttpWebResponse =
   dynamic_cast<HttpWebResponse*>(myHttpWebRequest->GetResponse());
Console::WriteLine(S"\nThe 'ProtocolVersion' of the protocol changed to {0}", 
   myHttpWebRequest->ProtocolVersion);
Console::WriteLine(S"\nThe protocol version of the response Object* is {0}",
   myHttpWebResponse->ProtocolVersion);

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

Community Additions

ADD
Show:
© 2014 Microsoft