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WebException Constructor (String)

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

Namespace:  System.Net
Assemblies:   System.Net.Requests (in System.Net.Requests.dll)
  System (in System.dll)

public WebException(
	string 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 null, the Message property is initialized to a system-supplied message. The InnerException and Response properties are initialized to null. 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.
		      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("Connection created successfully");
		      httpSocket.Close();
		   }
         catch(SocketException e)
		   {		     
		      Console.WriteLine("\nException thrown.\nThe 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.");
		   }

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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