TransactionAttribute 类

定义

public ref class TransactionAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Class, Inherited=true)]
[System.Runtime.InteropServices.ComVisible(false)]
public sealed class TransactionAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Class, Inherited=true)>]
[<System.Runtime.InteropServices.ComVisible(false)>]
type TransactionAttribute = class
    inherit Attribute

Public NotInheritable Class TransactionAttribute
Inherits Attribute

继承

Object

Attribute

TransactionAttribute

属性

AttributeUsageAttribute ComVisibleAttribute

示例

下面的代码示例演示了如何使用 TransactionAttribute 将其标记为 ServicedComponent 事务性。

[assembly:System::Reflection::AssemblyKeyFile("Transaction.snk")];
[Transaction]
public ref class TransactionalComponent: public ServicedComponent
{
public:
   void TransactionalMethod( String^ data )
   {
      ContextUtil::DeactivateOnReturn = true;
      ContextUtil::MyTransactionVote = TransactionVote::Abort;
      
      // do work with data
      ContextUtil::MyTransactionVote = TransactionVote::Commit;
   }

};

[Transaction]
public class TransactionalComponent : ServicedComponent
{

    public void TransactionalMethod (string data)
    {

      ContextUtil.DeactivateOnReturn = true;
      ContextUtil.MyTransactionVote = TransactionVote.Abort;

      // Do work with data. Return if any errors occur.

      // Vote to commit. If any errors occur, this code will not execute.
      ContextUtil.MyTransactionVote = TransactionVote.Commit;
    }
}

<Transaction()>  _
Public Class TransactionalComponent
    Inherits ServicedComponent
    
    
    Public Sub TransactionalMethod(ByVal data As String) 
        
        ContextUtil.DeactivateOnReturn = True
        ContextUtil.MyTransactionVote = TransactionVote.Abort
        
        ' Do work with data. Return if any errors occur.
        ' Vote to commit. If any errors occur, this code will not execute.
        ContextUtil.MyTransactionVote = TransactionVote.Commit
    
    End Sub
End Class

注解

如果使用此属性指定事务类型，则不能在 COM+ 目录中更改它。 如果在 COM+ 目录中更改了事务类型，则必须在具有此属性的组件上指定相同的事务类型。

有关使用属性的详细信息，请参阅 “属性”。