WebException Constructor (String, Exception)
Initializes a new instance of the WebException class with the specified error message and nested exception.
Assembly: System (in System.dll)
The WebException instance is initialized with the Message property set to the value of message and the InnerException property set to the value of innerException. 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 and nested exception.
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. ' and the 'InnerException' which actually lead to this exception. Throw New WebException("Unable to locate the Server with 'www.contoso.com' Uri.", e) End Try
.NET FrameworkSupported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
Portable Class LibrarySupported in: Portable Class Library
.NET for Windows Store appsSupported in: Windows 8
.NET for Windows Phone appsSupported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.