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WebException Constructor (String)

Initializes a new instance of the WebException class with the specified error message.

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

'Declaration
Public Sub New ( _
	message As String _
)
'Usage
Dim message As String 

Dim instance As New WebException(message)

Parameters

message
Type: System.String

The text of the error message.

The WebException instance is initialized with the Message property set to the value of message. If message is Nothing, the Message property is initialized to a system-supplied message. The InnerException and Response properties are initialized to Nothing. The Status property is initialized to RequestCanceled.

The following example throws a WebException by specifying an error message.

       Try 
           ' 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.  
	         
           Dim hostEntry As IPHostEntry = Dns.Resolve(connectUri)

           Dim serverAddress As IPAddress = hostEntry.AddressList(0)
           Dim endPoint As New IPEndPoint(serverAddress, 80)
           httpSocket.Connect(endPoint)
           Console.WriteLine("Connection created successfully")
           httpSocket.Close()
       Catch e As SocketException
           Console.WriteLine((ControlChars.Cr + "Exception thrown." + ControlChars.Cr + "The Original Message is: " + e.Message))
           ' Throw the 'WebException' object with a message string specific to the situation. 
           Throw New WebException("Unable to locate the Server with 'www.contoso.com' Uri.")
       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(connectUri);

   IPAddress* serverAddress = hostEntry->AddressList[0];
   IPEndPoint* endPoint = new IPEndPoint(serverAddress, 80);
   httpSocket->Connect(endPoint);
   Console::WriteLine(S"Connection created successfully");
   httpSocket->Close();
} catch (SocketException* e) {
   Console::WriteLine(S"\nException thrown.\nThe Original Message is: {0}", e->Message);
   // Throw the 'WebException' object with a message string specific to the situation.
   throw new WebException(S"Unable to locate the Server with 'www.contoso.com' Uri.");
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0
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