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Showing content from https://learn.microsoft.com/en-us/dotnet/api/system.net.http.httpresponsemessage below:

HttpResponseMessage Class (System.Net.Http) | Microsoft Learn

Represents a HTTP response message including the status code and data.

public ref class HttpResponseMessage : IDisposable

public class HttpResponseMessage : IDisposable

type HttpResponseMessage = class
    interface IDisposable

Public Class HttpResponseMessage
Implements IDisposable

Inheritance

Implements

// HttpClient is intended to be instantiated once per application, rather than per-use. See Remarks.
static readonly HttpClient client = new HttpClient();

static async Task Main()
{
    // Call asynchronous network methods in a try/catch block to handle exceptions.
    try
    {
        using HttpResponseMessage response = await client.GetAsync("http://www.contoso.com/");
        response.EnsureSuccessStatusCode();
        string responseBody = await response.Content.ReadAsStringAsync();
        // Above three lines can be replaced with new helper method below
        // string responseBody = await client.GetStringAsync(uri);

        Console.WriteLine(responseBody);
    }
    catch (HttpRequestException e)
    {
        Console.WriteLine("\nException Caught!");
        Console.WriteLine("Message :{0} ", e.Message);
    }
}

open System.Net.Http

// HttpClient is intended to be instantiated once per application, rather than per-use. See Remarks.
let client = new HttpClient()

let main =
    task {
        // Call asynchronous network methods in a try/catch block to handle exceptions.
        try
            use! response = client.GetAsync "http://www.contoso.com/"
            response.EnsureSuccessStatusCode() |> ignore
            let! responseBody = response.Content.ReadAsStringAsync()
            // Above three lines can be replaced with new helper method below
            // let! responseBody = client.GetStringAsync uri

            printfn $"{responseBody}"
        with
        | :? HttpRequestException as e ->
            printfn "\nException Caught!"
            printfn $"Message :{e.Message} "
    }

main.Wait()

' HttpClient is intended to be instantiated once per application, rather than per-use. See Remarks.
Shared ReadOnly client As HttpClient = New HttpClient()

Private Shared Async Function Main() As Task
    ' Call asynchronous network methods in a try/catch block to handle exceptions.
    Try
        Using response As HttpResponseMessage = Await client.GetAsync("http://www.contoso.com/")
            response.EnsureSuccessStatusCode()
            Dim responseBody As String = Await response.Content.ReadAsStringAsync()
            ' Above three lines can be replaced with new helper method below
            ' Dim responseBody As String = Await client.GetStringAsync(uri)

            Console.WriteLine(responseBody)
        End Using
    Catch e As HttpRequestException
        Console.WriteLine(Environment.NewLine & "Exception Caught!")
        Console.WriteLine("Message :{0} ", e.Message)
    End Try
End Function

The preceding code example uses an async Task Main() entry point. That feature requires C# 7.1 or later.

A common way to get an HttpResponseMessage is from one of the HttpClient.SendAsync(HttpRequestMessage) methods.

Gets or sets the content of a HTTP response message.

Gets the collection of HTTP response headers.

Gets a value that indicates if the HTTP response was successful.

Gets or sets the reason phrase, which typically is sent by servers together with the status code.

Gets or sets the request message that led to this response message.

Gets or sets the status code of the HTTP response.

Gets the collection of trailing headers included in an HTTP response.

Gets or sets the HTTP message version.

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