TransactionOption 枚举

定义

命名空间:

System.EnterpriseServices

程序集:

System.EnterpriseServices.dll

指定组件请求的自动事务类型。

C#

[System.Serializable]
public enum TransactionOption

继承

Object

ValueType

Enum

TransactionOption

属性

SerializableAttribute

字段

名称	值	说明
Disabled	0	忽略当前上下文中的任何事务。
NotSupported	1	使用非受控事务在上下文中创建组件。
Required	3	如果事务存在，则共享该事务；如有必要，则创建新事务。
RequiresNew	4	使用新事务创建组件，而与当前上下文的状态无关。
Supported	2	如果事务存在，则共享该事务。

示例

下面的代码示例演示如何使用 TransactionOption 类型。

C#

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
{
}

注解

使用 .NET 安装工具 (Regsvcs.exe) 时， 的 ServicedComponent 事务选项默认为 Disabled。

适用于