HttpVersion Class 
Definition
Important
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Defines the HTTP version numbers that are supported by the HttpWebRequest and HttpWebResponse classes.
public ref class HttpVersion abstract sealedpublic ref class HttpVersionpublic static class HttpVersionpublic class HttpVersiontype HttpVersion = classPublic Class HttpVersion- Inheritance
- 
				HttpVersion
Examples
The following example demonstrates the use of HttpVersion.
// HttpClient lifecycle management best practices:
// https://free.blessedness.top/dotnet/fundamentals/networking/http/httpclient-guidelines#recommended-use
using HttpClient client = new HttpClient();
using HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, "http://www.microsoft.com");
Console.WriteLine("Default HTTP request version is {0}", request.Version);
request.Version = HttpVersion.Version10;
Console.WriteLine("Request version after assignment is {0}", request.Version);
using HttpResponseMessage response = client.Send(request);
Console.WriteLine("Response HTTP version {0}", response.Version);
' HttpClient lifecycle management best practices:
' https://free.blessedness.top/dotnet/fundamentals/networking/http/httpclient-guidelines#recommended-use
Using client As New HttpClient()
    Using request As New HttpRequestMessage(HttpMethod.Get, "http://www.microsoft.com")
        Console.WriteLine("Default HTTP request version is {0}", request.Version)
        request.Version = HttpVersion.Version10
        Console.WriteLine("Request version after assignment is {0}", request.Version)
        Using response As HttpResponseMessage = client.Send(request)
            Console.WriteLine("Response HTTP version {0}", response.Version)
        End Using
    End Using
End Using
Remarks
The HttpVersion class defines the HTTP versions that are supported by the HttpClient class. The HTTP version number is used to control version-specific features of HTTP, such as pipelining and chunking.
Constructors
| HttpVersion() | Initializes a new instance of the HttpVersion class. | 
Fields
| Unknown | Defines a Version instance for an unknown HTTP version. | 
| Version10 | Defines a Version instance for HTTP 1.0. | 
| Version11 | Defines a Version instance for HTTP 1.1. | 
| Version20 | Defines a Version instance for HTTP 2.0. | 
| Version30 | Defines a Version instance for HTTP 3.0. |