FileWebResponse.ContentLength-Eigenschaft

Ruft die Länge des Inhalts in der Dateisystemressource ab.

Namespace: System.Net
Assembly: System (in system.dll)

Syntax

'Declaration
Public Overrides ReadOnly Property ContentLength As Long
'Usage
Dim instance As FileWebResponse
Dim value As Long

value = instance.ContentLength

public override long ContentLength { get; }

public:
virtual property long long ContentLength {
    long long get () override;
}

/** @property */
public long get_ContentLength ()

public override function get ContentLength () : long

Eigenschaftenwert

Die Anzahl der von der Dateisystemressource zurückgegebenen Bytes.

Hinweise

Die ContentLength-Eigenschaft enthält die Länge der Dateisystemressource in Bytes.

Beispiel

Im folgenden Beispiel wird mit der ContentLength-Eigenschaft die Inhaltslänge der Dateisystemressource abgerufen.

Public Shared Sub GetPage(url As [String])
    
    Try
        Dim fileUrl As New Uri("file://" + url)
        ' Create a 'FileWebrequest' object with the specified Uri 
        Dim myFileWebRequest As FileWebRequest = CType(WebRequest.Create(fileUrl), FileWebRequest)
        ' Send the 'fileWebRequest' and wait for response.    
        Dim myFileWebResponse As FileWebResponse = CType(myFileWebRequest.GetResponse(), FileWebResponse)
        
        ' The ContentLength and ContentType received as headers in the response object are also exposed as properties.
        ' These provide information about the length and type of the entity body in the response.
        Console.WriteLine(ControlChars.Cr + "Content length :{0}, Content Type : {1}", myFileWebResponse.ContentLength, myFileWebResponse.ContentType)
        myFileWebResponse.Close()
    Catch e As WebException
        Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "The Reason for failure is : {0}", e.Status)
    Catch e As Exception
        Console.WriteLine(ControlChars.Cr + "The following exception was raised : {0}", e.Message)
    End Try

public static void GetPage(String url) 
 {
   try 
     {     
         Uri fileUrl = new Uri("file://"+url);
         // Create a 'FileWebrequest' object with the specified Uri.
         FileWebRequest myFileWebRequest = (FileWebRequest)WebRequest.Create(fileUrl); 
         // Send the 'fileWebRequest' and wait for response.    
         FileWebResponse myFileWebResponse = (FileWebResponse)myFileWebRequest.GetResponse(); 
         // Print the ContentLength and ContentType properties received as headers in the response object.
         Console.WriteLine("\nContent length :{0}, Content Type : {1}",myFileWebResponse.ContentLength,myFileWebResponse.ContentType);  
         // Release resources of response object.
         myFileWebResponse.Close();
     } 
   catch(WebException e) 
     {
         Console.WriteLine("\r\nWebException thrown.The Reason for failure is : {0}",e.Status); 
     }
   catch(Exception e)
     {
         Console.WriteLine("\nThe following Exception was raised : {0}",e.Message);
     }
}

void GetPage( String^ url )
{
   try
   {
      Uri^ fileUrl = gcnew Uri( String::Concat( "file://", url ) );
      // Create a 'FileWebrequest' Object* with the specified Uri.
      FileWebRequest^ myFileWebRequest = (FileWebRequest^)( WebRequest::Create( fileUrl ) );
      // Send the 'fileWebRequest' and wait for response.
      FileWebResponse^ myFileWebResponse = (FileWebResponse^)( myFileWebRequest->GetResponse() );
      // Print the ContentLength and ContentType properties received as headers in the response Object*.
      Console::WriteLine( "\nContent length : {0}, Content Type : {1}", myFileWebResponse->ContentLength, myFileWebResponse->ContentType );
      // Release resources of response Object*.
      myFileWebResponse->Close();
   }
   catch ( WebException^ e ) 
   {
      Console::WriteLine( "\r\nWebException thrown.The Reason for failure is : {0}", e->Status );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "\nThe following Exception was raised : {0}", e->Message );
   }
}

public static void GetPage(String url)
{
    try {
        Uri fileUrl = new Uri("file://" + url);

        // Create a 'FileWebrequest' object with the specified Uri.
        FileWebRequest myFileWebRequest = (FileWebRequest)(WebRequest.
            Create(fileUrl));

        // Send the 'fileWebRequest' and wait for response.    
        FileWebResponse myFileWebResponse = (FileWebResponse)(
            myFileWebRequest.GetResponse());

        // Print the ContentLength and ContentType properties received as
        // headers in the response object.
        Console.WriteLine("\nContent length :{0}, Content Type : {1}",
            System.Convert.ToString(myFileWebResponse.get_ContentLength()),
            myFileWebResponse.get_ContentType());

        // Release resources of response object.
        myFileWebResponse.Close();
    }
    catch (WebException e) {
        Console.WriteLine("\r\nWebException thrown.The Reason for failure "
            + " is : {0}", e.get_Status());
    }
    catch (System.Exception e) {
        Console.WriteLine("\nThe following Exception was raised : {0}",
            e.get_Message());
    }
} //GetPage

Plattformen

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

FileWebResponse-Klasse
FileWebResponse-Member
System.Net-Namespace