Gets or sets the version of HTTP to use for the request.
(in System.dll)
Visual Basic (Declaration)
Public Property ProtocolVersion As Version
Dim instance As HttpWebRequest
Dim value As Version
value = instance.ProtocolVersion
instance.ProtocolVersion = value
public Version ProtocolVersion { get; set; }
public:
property Version^ ProtocolVersion {
Version^ get ();
void set (Version^ value);
}
public function get ProtocolVersion () : Version
public function set ProtocolVersion (value : Version)
| Exception | Condition |
|---|
| 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.
The following code example sets the ProtocolVersion Property.
' Create a new 'HttpWebRequest' Object to the mentioned URL.
Dim myHttpWebRequest As HttpWebRequest = CType(WebRequest.Create("http://www.microsoft.com"), HttpWebRequest)
' Use the existing 'ProtocolVersion' , and display it onto the console.
Console.WriteLine(ControlChars.Cr + "The '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.
Dim myHttpWebResponse As HttpWebResponse = CType(myHttpWebRequest.GetResponse(), HttpWebResponse)
Console.WriteLine(ControlChars.Cr + "The 'ProtocolVersion' of the protocol changed to {0}", myHttpWebRequest.ProtocolVersion)
Console.WriteLine(ControlChars.Cr + "The protocol version of the response object is {0}", myHttpWebResponse.ProtocolVersion)
// 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 = (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
Reference