TcpClient.BeginConnect Method (IPAddress, Int32, AsyncCallback, Object)
Assembly: System (in system.dll)
'Declaration Public Function BeginConnect ( _ addresses As IPAddress(), _ port As Integer, _ requestCallback As AsyncCallback, _ state As Object _ ) As IAsyncResult 'Usage Dim instance As TcpClient Dim addresses As IPAddress() Dim port As Integer Dim requestCallback As AsyncCallback Dim state As Object Dim returnValue As IAsyncResult returnValue = instance.BeginConnect(addresses, port, requestCallback, state)
public IAsyncResult BeginConnect ( IPAddress addresses, int port, AsyncCallback requestCallback, Object state )
public function BeginConnect ( addresses : IPAddress, port : int, requestCallback : AsyncCallback, state : Object ) : IAsyncResult
At least one IPAddress that designates the remote hosts.
The port number of the remote hosts.
An AsyncCallback delegate that references the method to invoke when the operation is complete.
A user-defined object that contains information about the connect operation. This object is passed to the requestCallback delegate when the operation is complete.
Return ValueAn IAsyncResult object that references the asynchronous connection.
The addresses parameter is a null reference (Nothing in Visual Basic).
An error occurred when attempting to access the socket. See the Remarks section for more information.
The Socket has been closed.
A caller higher in the call stack does not have permission for the requested operation.
The port number is not valid.
This method does not block until the operation completes. To block until the operation completes, use one of the Connect method overloads.
For detailed information about using the asynchronous programming model, see Calling Synchronous Methods Asynchronously.
This method is typically used immediately after a call to the ResolveToAddresses method, which can return multiple IP addresses for a single host.
Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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.