WebException.WebException() Constructor

Initializes a new instance of the WebException class.

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

Public Sub New
Dim instance As New WebException
public WebException ()
public function WebException ()
Not applicable.

The default constructor initializes a new instance of the WebException class. The Message property is initialized to a system-supplied message that describes the error. This message takes into account the current system culture. The InnerException and Response properties are initialized to a null reference (Nothing in Visual Basic). The Status property is initialized to RequestCanceled.

The following example throws a default WebException.

    ' A 'Socket' object has been created.
    Dim httpSocket As New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
    ' The IPaddress of the unknown uri is resolved using the 'Dns.Resolve' method. 
     ' which leads to the 'SocketException' exception. 
    Dim hostEntry As IPHostEntry = Dns.Resolve("http://www.contoso.com")
    Dim serverAddress As IPAddress = hostEntry.AddressList(0)
    Dim endPoint As New IPEndPoint(serverAddress, 80)
    Console.WriteLine("Connection created successfully")
Catch e As SocketException
    Dim exp As [String] = e.Message
    ' Throw the WebException with no parameters.
    Throw New WebException()
End Try

try {
    // A 'Socket' object has been created.
    Socket httpSocket = new Socket(AddressFamily.InterNetwork,
        SocketType.Stream, ProtocolType.Tcp);
    // The IPaddress of the unknown uri is resolved using the
    // 'Dns.Resolve' method. 
    IPHostEntry hostEntry = Dns.Resolve("http://www.contoso.com");

    IPAddress serverAddress = (IPAddress)hostEntry.get_AddressList()
    IPEndPoint endPoint = new IPEndPoint(serverAddress, 80);
    Console.WriteLine("Connection created successfully");
catch (SocketException e) {
    String exp = e.get_Message();
    // Throw the WebException with no parameters.
    throw new WebException();

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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