Value

A Version that represents the HTTP version to use for the request. The default is HttpVersion.Version11. [Edit]

Exceptions

Type	Reason
ArgumentException	The HTTP version is set to a value other than 1.0 or 1.1. [Edit]

Remarks

The System.Net.HttpWebRequest class supports only versions 1.0 and 1.1 of HTTP. Setting HttpWebRequest.ProtocolVersion to a different version causes a ArgumentException exception to be thrown.

Note: To set the HttpWebRequest.ProtocolVersion property of the current instance, specify one of the members of the use the System.Net.HttpVersion class.

[Edit]

Requirements

Namespace: System.Net
Assembly: System (in System.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0