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SessionChangeDescription Structure

.NET Framework 2.0

Other Versions

Note: This structure is new in the .NET Framework version 2.0.

Identifies the reason for a Terminal Services session change.

Namespace: System.ServiceProcess
Assembly: System.ServiceProcess (in system.serviceprocess.dll)

Syntax

C++

public struct SessionChangeDescription

public final class SessionChangeDescription extends ValueType

JScript

JScript suports the use of structures, but not the declaration of new ones.

Example

The following code example shows the use of the SessionChangeDescription class in an implementation of the OnSessionChange method in a class derived from ServiceBase. This code example is part of a larger example provided for the ServiceBase class.

C++

        // Handle a session change notice
        protected override void OnSessionChange(SessionChangeDescription changeDescription)
        {
#if LOGEVENTS
            EventLog.WriteEntry("SimpleService.OnSessionChange", DateTime.Now.ToLongTimeString() +
                " - Session change notice received: " +
                changeDescription.Reason.ToString() + "  Session ID: " + 
                changeDescription.SessionId.ToString());
#endif

            switch (changeDescription.Reason)
            {
                case SessionChangeReason.SessionLogon:
                    userCount += 1;
#if LOGEVENTS
                    EventLog.WriteEntry("SimpleService.OnSessionChange", 
                        DateTime.Now.ToLongTimeString() +
                        " SessionLogon, total users: " +
                        userCount.ToString());
#endif
                    break;

                case SessionChangeReason.SessionLogoff:

                    userCount -= 1;
#if LOGEVENTS
                    EventLog.WriteEntry("SimpleService.OnSessionChange", 
                        DateTime.Now.ToLongTimeString() +
                        " SessionLogoff, total users: " +
                        userCount.ToString());
#endif
                    break;
                case SessionChangeReason.RemoteConnect:
                    userCount += 1;
#if LOGEVENTS
                    EventLog.WriteEntry("SimpleService.OnSessionChange", 
                        DateTime.Now.ToLongTimeString() +
                        " RemoteConnect, total users: " +
                        userCount.ToString());
#endif
                    break;

                case SessionChangeReason.RemoteDisconnect:

                    userCount -= 1;
#if LOGEVENTS
                    EventLog.WriteEntry("SimpleService.OnSessionChange", 
                        DateTime.Now.ToLongTimeString() +
                        " RemoteDisconnect, total users: " +
                        userCount.ToString());
#endif
                    break;
                case SessionChangeReason.SessionLock:
#if LOGEVENTS
                    EventLog.WriteEntry("SimpleService.OnSessionChange", 
                        DateTime.Now.ToLongTimeString() + 
                        " SessionLock");
#endif
                    break;

                case SessionChangeReason.SessionUnlock:
#if LOGEVENTS
                    EventLog.WriteEntry("SimpleService.OnSessionChange", 
                        DateTime.Now.ToLongTimeString() + 
                        " SessionUnlock");
#endif
                    break;

                default:

                    break;
            }
        }

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

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.

Version Information

.NET Framework

Supported in: 2.0

Reference

SessionChangeDescription Members
System.ServiceProcess Namespace

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