SessionChangeDescription 結構

定義

命名空間:

System.ServiceProcess

組件:

System.ServiceProcess.ServiceController.dll

套件:

System.ServiceProcess.ServiceController v8.0.0

Source:

SessionChangeDescription.cs

識別終端機服務工作階段變更的原因。

public value class SessionChangeDescription : IEquatable<System::ServiceProcess::SessionChangeDescription>

public readonly struct SessionChangeDescription : IEquatable<System.ServiceProcess.SessionChangeDescription>

type SessionChangeDescription = struct

Public Structure SessionChangeDescription
Implements IEquatable(Of SessionChangeDescription)

繼承

Object

ValueType

SessionChangeDescription

實作

IEquatable<SessionChangeDescription>

範例

下列程式碼範例示範在衍生自 ServiceBase 之類別中方法的 OnSessionChange 實作中使用 SessionChangeDescription 類別。 此程式碼範例是針對 類別提供的較大範例的 ServiceBase 一部分。

        // 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;
            }
        }

    ' 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

屬性

Reason	取得工作階段變更的原因。
SessionId	取得相關聯工作階段的工作階段識別碼。

方法

Equals(Object)	判斷指定的物件是否等於目前的工作階段變更描述。
Equals(SessionChangeDescription)	判斷指定的工作階段變更描述是否等於目前的工作階段變更描述。
GetHashCode()	取得目前工作階段變更描述的雜湊碼。

運算子

Equality(SessionChangeDescription, SessionChangeDescription)	傳回值，指出兩個 SessionChangeDescription 結構是否相等。
Inequality(SessionChangeDescription, SessionChangeDescription)	傳回值，指出兩個 SessionChangeDescription 結構是否不相等。