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This page is specific to
Microsoft Visual Studio 2010/.NET Framework 4

Other versions are also available for the following:
.NET Framework Class Library
FtpWebRequest..::.KeepAlive Property

Gets or sets a Boolean value that specifies whether the control connection to the FTP server is closed after the request completes.

Namespace:  System.Net
Assembly:  System (in System.dll)
Visual Basic
Public Property KeepAlive As Boolean
C#
public bool KeepAlive { get; set; }
Visual C++
public:
property bool KeepAlive {
    bool get ();
    void set (bool value);
}
F#
member KeepAlive : bool with get, set

Property Value

Type: System..::.Boolean
true if the connection to the server should not be destroyed; otherwise, false. The default value is true.
ExceptionCondition
InvalidOperationException

A new value was specified for this property for a request that is already in progress.

When the KeepAlive property is set to false, the control connection is closed when you call the Close method.

Changing KeepAlive after calling the GetRequestStream, BeginGetRequestStream, GetResponse, or BeginGetResponse method causes an InvalidOperationException exception.

The following code example retrieves and displays property values for a specified FtpWebRequest object.

Visual Basic
Console.WriteLine("Passive: {0}  Keep alive: {1}  Binary: {2} Timeout: {3}.", request.UsePassive, request.KeepAlive, request.UseBinary, If(request.Timeout = -1, "none", request.Timeout.ToString()))
C#
Console.WriteLine("Passive: {0}  Keep alive: {1}  Binary: {2} Timeout: {3}.", 
    request.UsePassive, 
    request.KeepAlive, 
    request.UseBinary,
    request.Timeout == -1 ? "none" : request.Timeout.ToString()
);
Visual C++
      Console::WriteLine( "Passive: {0}  Keep alive: {1}  Binary: {2} Timeout: {3}.", request->UsePassive, request->KeepAlive, request->UseBinary, request->Timeout == -1 ? "none" : request->Timeout.ToString() );

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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