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HttpWebResponse.ContentLength Property

Gets the length of the content returned by the request.

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

Public Overrides ReadOnly Property ContentLength As Long
Dim instance As HttpWebResponse
Dim value As Long

value = instance.ContentLength

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

public override function get ContentLength () : long

Property Value

The number of bytes returned by the request. Content length does not include header information.

Exception typeCondition


The current instance has been disposed.

The ContentLength property contains the value of the Content-Length header returned with the response. If the Content-Length header is not set in the response, ContentLength is set to the value -1.

The following example displays the value of this property.

Imports System
Imports System.Net
Imports System.Text
Imports System.IO

    Public Class Test

        ' Specify the URL to receive the request.
        Public Shared Sub Main(ByVal args() As String)
        Dim request As HttpWebRequest = CType(WebRequest.Create(args(0)), HttpWebRequest)

        ' Set some reasonable limits on resources used by this request
        request.MaximumAutomaticRedirections = 4
        request.MaximumResponseHeadersLength = 4

        ' Set credentials to use for this request.
        request.Credentials = CredentialCache.DefaultCredentials

        Dim response As HttpWebResponse = CType(request.GetResponse(), HttpWebResponse)

        Console.WriteLine("Content length is {0}", response.ContentLength)
        Console.WriteLine("Content type is {0}", response.ContentType)

        ' Get the stream associated with the response.
        Dim receiveStream As Stream = response.GetResponseStream()

        ' Pipes the stream to a higher level stream reader with the required encoding format. 
        Dim readStream As New StreamReader(receiveStream, Encoding.UTF8)

        Console.WriteLine("Response stream received.")
    End Sub 'Main
End Class 'Test
'The output from this example will vary depending on the value passed into Main 
'but will be similar to the following:
'Content length is 1542
'Content type is text/html; charset=utf-8
'Response stream received.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0