SessionChangeDescription Structure
Identifies the reason for a Terminal Services session change.
Assembly: System.ServiceProcess (in System.ServiceProcess.dll)
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.
' Handle a session change notice
Protected Overrides Sub OnSessionChange(ByVal changeDescription As SessionChangeDescription)
#If LOGEVENTS Then
System.Diagnostics.EventLog.WriteEntry("SimpleService.OnSessionChange", DateTime.Now.ToLongTimeString() + " - Session change notice received: " + changeDescription.Reason.ToString() + " Session ID: " + changeDescription.SessionId.ToString())
#End If
Select Case changeDescription.Reason
Case SessionChangeReason.SessionLogon
userCount += 1
#If LOGEVENTS Then
System.Diagnostics.EventLog.WriteEntry("SimpleService.OnSessionChange", DateTime.Now.ToLongTimeString() + " SessionLogon, total users: " + userCount.ToString())
#End If
Case SessionChangeReason.SessionLogoff
userCount -= 1
#If LOGEVENTS Then
System.Diagnostics.EventLog.WriteEntry("SimpleService.OnSessionChange", DateTime.Now.ToLongTimeString() + " SessionLogoff, total users: " + userCount.ToString())
#End If
Case SessionChangeReason.RemoteConnect
userCount += 1
#If LOGEVENTS Then
System.Diagnostics.EventLog.WriteEntry("SimpleService.OnSessionChange", DateTime.Now.ToLongTimeString() + " RemoteConnect, total users: " + userCount.ToString())
#End If
Case SessionChangeReason.RemoteDisconnect
userCount -= 1
#If LOGEVENTS Then
System.Diagnostics.EventLog.WriteEntry("SimpleService.OnSessionChange", DateTime.Now.ToLongTimeString() + " RemoteDisconnect, total users: " + userCount.ToString())
#End If
Case SessionChangeReason.SessionLock
#If LOGEVENTS Then
System.Diagnostics.EventLog.WriteEntry("SimpleService.OnSessionChange", DateTime.Now.ToLongTimeString() + " SessionLock")
#End If
Case SessionChangeReason.SessionUnlock
#If LOGEVENTS Then
System.Diagnostics.EventLog.WriteEntry("SimpleService.OnSessionChange", DateTime.Now.ToLongTimeString() + " SessionUnlock")
#End If
Case Else
End Select
End Sub 'OnSessionChange
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.