HttpListenerRequest.UserAgent Eigenschap

Definitie

Naamruimte:
System.Net
Assembly's:
netstandard.dll, System.Net.HttpListener.dll
Assembly:
System.Net.HttpListener.dll
Assembly:
System.dll
Assembly:
netstandard.dll
Bron:
HttpListenerRequest.cs
Bron:
HttpListenerRequest.cs
Bron:
HttpListenerRequest.cs
Bron:
HttpListenerRequest.cs
Bron:
HttpListenerRequest.cs

Hiermee haalt u de gebruikersagent op die door de client wordt gepresenteerd.

public:
 property System::String ^ UserAgent { System::String ^ get(); };
public string? UserAgent { get; }
public string UserAgent { get; }
member this.UserAgent : string
Public ReadOnly Property UserAgent As String

Waarde van eigenschap

String

Een String object dat de tekst van de header van de aanvraag User-Agent bevat.

Voorbeelden

In het volgende codevoorbeeld ziet u hoe u deze eigenschap gebruikt.

public static void ShowRequestProperties1 (HttpListenerRequest request)
{
    // Display the MIME types that can be used in the response.
    string[] types = request.AcceptTypes;
    if (types != null)
    {
        Console.WriteLine("Acceptable MIME types:");
        foreach (string s in types)
        {
            Console.WriteLine(s);
        }
    }
    // Display the language preferences for the response.
    types = request.UserLanguages;
    if (types != null)
    {
        Console.WriteLine("Acceptable natural languages:");
        foreach (string l in types)
        {
            Console.WriteLine(l);
        }
    }

    // Display the URL used by the client.
    Console.WriteLine("URL: {0}", request.Url.OriginalString);
    Console.WriteLine("Raw URL: {0}", request.RawUrl);
    Console.WriteLine("Query: {0}", request.QueryString);

    // Display the referring URI.
    Console.WriteLine("Referred by: {0}", request.UrlReferrer);

    //Display the HTTP method.
    Console.WriteLine("HTTP Method: {0}", request.HttpMethod);
    //Display the host information specified by the client;
    Console.WriteLine("Host name: {0}", request.UserHostName);
    Console.WriteLine("Host address: {0}", request.UserHostAddress);
    Console.WriteLine("User agent: {0}", request.UserAgent);
}

Public Shared Sub ShowRequestProperties1(ByVal request As HttpListenerRequest)
    ' Display the MIME types that can be used in the response.
    Dim types As String() = request.AcceptTypes

    If types IsNot Nothing Then
        Console.WriteLine("Acceptable MIME types:")

        For Each s As String In types
            Console.WriteLine(s)
        Next
    End If

    ' Display the language preferences for the response.
    types = request.UserLanguages

    If types IsNot Nothing Then
        Console.WriteLine("Acceptable natural languages:")

        For Each l As String In types
            Console.WriteLine(l)
        Next
    End If

    ' Display the URL used by the client.
    Console.WriteLine("URL: {0}", request.Url.OriginalString)
    Console.WriteLine("Raw URL: {0}", request.RawUrl)
    Console.WriteLine("Query: {0}", request.QueryString)

    ' Display the referring URI.
    Console.WriteLine("Referred by: {0}", request.UrlReferrer)

    ' Display the HTTP method.
    Console.WriteLine("HTTP Method: {0}", request.HttpMethod)

    ' Display the host information specified by the client.
    Console.WriteLine("Host name: {0}", request.UserHostName)
    Console.WriteLine("Host address: {0}", request.UserHostAddress)
    Console.WriteLine("User agent: {0}", request.UserAgent)
End Sub

Opmerkingen

De User-Agent koptekst bevat doorgaans tekst die de naam en het versienummer van de software identificeert die wordt gebruikt om de aanvraag te genereren.

Zie de HttpRequestHeader opsomming voor een volledige lijst met aanvraagheaders.

De UserAgent waarde is null wanneer er geen User-Agent header in de aanvraag is.

Van toepassing op

Zie ook