Specifies the type of automatic synchronization requested by the component.
Namespace:
System.EnterpriseServices
Assembly:
System.EnterpriseServices (in System.EnterpriseServices.dll)
Visual Basic (Declaration)
<SerializableAttribute> _
Public Enumeration SynchronizationOption
Dim instance As SynchronizationOption
[SerializableAttribute]
public enum SynchronizationOption
[SerializableAttribute]
public enum class SynchronizationOption
public enum SynchronizationOption
| Member name | Description |
|---|
| Disabled | COM+ ignores the synchronization requirements of the component when determining context for the object. |
| NotSupported | An object with this value never participates in synchronization, regardless of the status of its caller. This setting is only available for components that are non-transactional and do not use just-in-time (JIT) activation. |
| Supported | An object with this value participates in synchronization, if it exists. |
| Required | Ensures that all objects created from the component are synchronized. |
| RequiresNew | An object with this value must participate in a new synchronization where COM+ manages contexts and apartments on behalf of all components involved in the call. |
The following code example demonstrates the use of the SynchronizationOption type.
Imports System
Imports System.EnterpriseServices
Imports System.Reflection
' References:
' System.EnterpriseServices
' An instance of this class will not join an activity, but can share its
' caller's context even if its caller is configured as NotSupported,
' Supported, Required, or RequiresNew.
<Synchronization(SynchronizationOption.Disabled)> _
Public Class SynchronizationAttribute_SynchronizationDisabled
Inherits ServicedComponent
End Class 'SynchronizationAttribute_SynchronizationDisabled
' An instance of this class will not join an activity, and will share its
' caller's context only if its caller is also configured as NotSupported.
<Synchronization(SynchronizationOption.NotSupported)> _
Public Class SynchronizationAttribute_SynchronizationNotSupported
Inherits ServicedComponent
End Class 'SynchronizationAttribute_SynchronizationNotSupported
' An instance of this class will join its caller's activity if one exists.
<Synchronization(SynchronizationOption.Supported)> _
Public Class SynchronizationAttribute_SynchronizationSupported
Inherits ServicedComponent
End Class 'SynchronizationAttribute_SynchronizationSupported
' An instance of this class will join its caller's activity if one exists.
' If not, a new activity will be created for it.
<Synchronization(SynchronizationOption.Required)> _
Public Class SynchronizationAttribute_SynchronizationRequired
Inherits ServicedComponent
End Class 'SynchronizationAttribute_SynchronizationRequired
' A new activity will always be created for an instance of this class.
<Synchronization(SynchronizationOption.RequiresNew)> _
Public Class SynchronizationAttribute_SynchronizationRequiresNew
Inherits ServicedComponent
End Class 'SynchronizationAttribute_SynchronizationRequiresNew
using System;
using System.EnterpriseServices;
using System.Reflection;
// References:
// System.EnterpriseServices
// An instance of this class will not join an activity, but can share its
// caller's context even if its caller is configured as NotSupported,
// Supported, Required, or RequiresNew.
[Synchronization(SynchronizationOption.Disabled)]
public class SynchronizationAttribute_SynchronizationDisabled :
ServicedComponent
{
}
// An instance of this class will not join an activity, and will share its
// caller's context only if its caller is also configured as NotSupported.
[Synchronization(SynchronizationOption.NotSupported)]
public class SynchronizationAttribute_SynchronizationNotSupported :
ServicedComponent
{
}
// An instance of this class will join its caller's activity if one exists.
[Synchronization(SynchronizationOption.Supported)]
public class SynchronizationAttribute_SynchronizationSupported :
ServicedComponent
{
}
// An instance of this class will join its caller's activity if one exists.
// If not, a new activity will be created for it.
[Synchronization(SynchronizationOption.Required)]
public class SynchronizationAttribute_SynchronizationRequired :
ServicedComponent
{
}
// A new activity will always be created for an instance of this class.
[Synchronization(SynchronizationOption.RequiresNew)]
public class SynchronizationAttribute_SynchronizationRequiresNew :
ServicedComponent
{
}
#using <System.EnterpriseServices.dll>
using namespace System;
using namespace System::EnterpriseServices;
// References:
// System.EnterpriseServices
// An instance of this class will not join an activity, but can share its
// caller's context even if its caller is configured as NotSupported,
// Supported, Required, or RequiresNew.
[Synchronization(SynchronizationOption::Disabled)]
public ref class SynchronizationAttribute_SynchronizationDisabled :
public ServicedComponent
{
};
// An instance of this class will not join an activity, and will share its
// caller's context only if its caller is also configured as NotSupported.
[Synchronization(SynchronizationOption::NotSupported)]
public ref class SynchronizationAttribute_SynchronizationNotSupported :
public ServicedComponent
{
};
// An instance of this class will join its caller's activity if one exists.
[Synchronization(SynchronizationOption::Supported)]
public ref class SynchronizationAttribute_SynchronizationSupported :
public ServicedComponent
{
};
// An instance of this class will join its caller's activity if one exists.
// If not, a new activity will be created for it.
[Synchronization(SynchronizationOption::Required)]
public ref class SynchronizationAttribute_SynchronizationRequired :
public ServicedComponent
{
};
// A new activity will always be created for an instance of this class.
[Synchronization(SynchronizationOption::RequiresNew)]
public ref class SynchronizationAttribute_SynchronizationRequiresNew :
public ServicedComponent
{
};
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.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference