TransactionOption 列舉
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
指定元件所要求的自動交易類型。
public enum class TransactionOption[System.Serializable]
public enum TransactionOption[<System.Serializable>]
type TransactionOption = Public Enum TransactionOption- 繼承
- 屬性
欄位
| 名稱 | 值 | Description |
|---|---|---|
| Disabled | 0 | 忽略當前上下文中的任何交易。 |
| NotSupported | 1 | 在沒有管理交易的上下文中建立元件。 |
| Supported | 2 | 如果有交易，則是分享。 |
| Required | 3 | 如果有交易，則分享交易，必要時建立新交易。 |
| RequiresNew | 4 | 建立包含新交易的元件，不論當前上下文的狀態如何。 |
範例
以下程式碼範例展示了該 TransactionOption 型別的使用。
#using <System.EnterpriseServices.dll>
using namespace System;
using namespace System::EnterpriseServices;
using namespace System::Reflection;
// References:
// System.EnterpriseServices
// An instance of this class will not participate in transactions, but can
// share its caller's context even if its caller is configured as
// NotSupported, Supported, Required, or RequiresNew.
[Transaction(TransactionOption::Disabled)]
public ref class TransactionDisabled : public ServicedComponent
{
};
// An instance of this class will not participate in transactions, and will
// share its caller's context only if its caller is also configured as
// NotSupported.
[Transaction(TransactionOption::NotSupported)]
public ref class TransactionNotSupported : public ServicedComponent
{
};
// An instance of this class will participate in its caller's transaction
// if one exists.
[Transaction(TransactionOption::Supported)]
public ref class TransactionSupported : public ServicedComponent
{
};
// An instance of this class will participate in its caller's transaction
// if one exists. If not, a new transaction will be created for it.
[Transaction(TransactionOption::Required)]
public ref class TransactionRequired : public ServicedComponent
{
};
// A new transaction will always be created for an instance of this class.
[Transaction(TransactionOption::RequiresNew)]
public ref class TransactionRequiresNew : public ServicedComponent
{
};
using System;
using System.EnterpriseServices;
using System.Reflection;
// References:
// System.EnterpriseServices
// An instance of this class will not participate in transactions, but can
// share its caller's context even if its caller is configured as
// NotSupported, Supported, Required, or RequiresNew.
[Transaction(TransactionOption.Disabled)]
public class TransactionAttribute_TransactionDisabled : ServicedComponent
{
}
// An instance of this class will not participate in transactions, and will
// share its caller's context only if its caller is also configured as
// NotSupported.
[Transaction(TransactionOption.NotSupported)]
public class TransactionAttribute_TransactionNotSupported : ServicedComponent
{
}
// An instance of this class will participate in its caller's transaction
// if one exists.
[Transaction(TransactionOption.Supported)]
public class TransactionAttribute_TransactionSupported : ServicedComponent
{
}
// An instance of this class will participate in its caller's transaction
// if one exists. If not, a new transaction will be created for it.
[Transaction(TransactionOption.Required)]
public class TransactionAttribute_TransactionRequired : ServicedComponent
{
}
// A new transaction will always be created for an instance of this class.
[Transaction(TransactionOption.RequiresNew)]
public class TransactionAttribute_TransactionRequiresNew : ServicedComponent
{
}
Imports System.EnterpriseServices
Imports System.Reflection
' References:
' System.EnterpriseServices
' An instance of this class will not participate in transactions, but can
' share its caller's context even if its caller is configured as
' NotSupported, Supported, Required, or RequiresNew.
<Transaction(TransactionOption.Disabled)> _
Public Class TransactionAttribute_TransactionDisabled
Inherits ServicedComponent
End Class
' An instance of this class will not participate in transactions, and will
' share its caller's context only if its caller is also configured as
' NotSupported.
<Transaction(TransactionOption.NotSupported)> _
Public Class TransactionAttribute_TransactionNotSupported
Inherits ServicedComponent
End Class
' An instance of this class will participate in its caller's transaction
' if one exists.
<Transaction(TransactionOption.Supported)> _
Public Class TransactionAttribute_TransactionSupported
Inherits ServicedComponent
End Class
' An instance of this class will participate in its caller's transaction
' if one exists. If not, a new transaction will be created for it.
<Transaction(TransactionOption.Required)> _
Public Class TransactionAttribute_TransactionRequired
Inherits ServicedComponent
End Class
' A new transaction will always be created for an instance of this class.
<Transaction(TransactionOption.RequiresNew)> _
Public Class TransactionAttribute_TransactionRequiresNew
Inherits ServicedComponent
End Class
備註
使用.NET安裝工具（Regsvcs.exe）時，ServicedComponent 的交易選項預設為 Disabled。
