HttpListenerRequest.UserAgent HttpListenerRequest.UserAgent HttpListenerRequest.UserAgent HttpListenerRequest.UserAgent Property

Definition

Ruft den vom Client dargestellten Benutzer-Agent ab.Gets the user agent presented by the client.

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

Eigenschaftswert

Ein String-Objekt, das den Text des User-Agent-Headers der Anforderung enthält.A String object that contains the text of the request's User-Agent header.

Beispiele

Im folgenden Codebeispiel wird die Verwendung dieser Eigenschaft veranschaulicht.The following code example demonstrates using this property.

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

Hinweise

Der User-Agent Header enthält normalerweise Text, der den Namen und die Versionsnummer der Software angibt, die zum Generieren der Anforderung verwendet wird.The User-Agent header typically contains text that identifies the name and version number of the software used to generate the request.

Eine umfassende Liste mit Anforderungs Headern finden Sie unter HttpRequestHeader der-Enumeration.For a complete list of request headers, see the HttpRequestHeader enumeration.

Der UserAgent ist NULL, wenn in der User-Agent Anforderung kein-Header vorhanden ist.The UserAgent is null when there is no User-Agent header in the request.

Gilt für:

Siehe auch