HttpListenerRequest.QueryString HttpListenerRequest.QueryString HttpListenerRequest.QueryString HttpListenerRequest.QueryString Property

Definition

Ruft die in der Anforderung enthaltene Abfragezeichenfolge ab.Gets the query string included in the request.

public:
 property System::Collections::Specialized::NameValueCollection ^ QueryString { System::Collections::Specialized::NameValueCollection ^ get(); };
public System.Collections.Specialized.NameValueCollection QueryString { get; }
member this.QueryString : System.Collections.Specialized.NameValueCollection
Public ReadOnly Property QueryString As NameValueCollection

Eigenschaftswert

Ein NameValueCollection-Objekt, das die im Anforderungs-Url enthaltenen Abfragedaten enthält.A NameValueCollection object that contains the query data included in the request Url.

Beispiele

Im folgenden Codebeispiel wird die Verwendung QueryString der-Eigenschaft veranschaulicht.The following code example demonstrates using the QueryString 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

In einer URL werden die Abfrage Informationen durch ein Fragezeichen (?) von den Pfadinformationen getrennt.In a URL, the query information is separated from the path information by a question mark (?). Name/Wert-Paare werden durch ein Gleichheitszeichen (=) getrennt.Name/value pairs are separated by an equals sign (=). Wenn Sie auf die Abfrage Daten als einzelne Zeichenfolge zugreifen möchten Query , können Sie den Uri Eigenschafts Wert Urlaus dem von zurückgegebenen-Objekt abrufen.To access the query data as a single string, get the Query property value from the Uri object returned by Url.

Hinweis

Abfragen ohne Gleichheitszeichen (Beispiel: http://www.contoso.com/query.htm?Name ) werden dem null Schlüssel in der NameValueCollectionhinzugefügt.Queries without an equal sign (example: http://www.contoso.com/query.htm?Name ) are added to the null key in the NameValueCollection.

Gilt für:

Siehe auch