SynchronizationAttribute 类

定义

public ref class SynchronizationAttribute sealed : Attribute

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

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

Public NotInheritable Class SynchronizationAttribute
Inherits Attribute

继承

Object

Attribute

SynchronizationAttribute

属性

AttributeUsageAttribute ComVisibleAttribute

示例

下面的代码示例演示了该 SynchronizationAttribute 类型的用法。

using System;
using System.EnterpriseServices;
using System.Reflection;

// References:
// System.EnterpriseServices

// This is equivalent to [Synchronization(SynchronizationOption.Required)].
[Synchronization]
public class SynchronizationAttribute_Ctor : ServicedComponent
{
}

[Synchronization(SynchronizationOption.Disabled)]
public class SynchronizationAttribute_Ctor_SynchronizationOption : ServicedComponent
{
}

[Synchronization(SynchronizationOption.RequiresNew)]
public class SynchronizationAttribute_Value : ServicedComponent
{
    public void ValueExample()
    {
        // Get the SynchronizationAttribute applied to the class.
        SynchronizationAttribute attribute =
            (SynchronizationAttribute)Attribute.GetCustomAttribute(
            this.GetType(),
            typeof(SynchronizationAttribute),
            false);

        // Display the value of the attribute's Value property.
        Console.WriteLine("SynchronizationAttribute.Value: {0}",
            attribute.Value);
    }
}

Imports System.EnterpriseServices
Imports System.Reflection


' References:
' System.EnterpriseServices

' This is equivalent to [Synchronization(SynchronizationOption.Required)].
<Synchronization()>  _
Public Class SynchronizationAttribute_Ctor
    Inherits ServicedComponent
End Class

<Synchronization(SynchronizationOption.Disabled)>  _
Public Class SynchronizationAttribute_Ctor_SynchronizationOption
    Inherits ServicedComponent
End Class

<Synchronization(SynchronizationOption.RequiresNew)>  _
Public Class SynchronizationAttribute_Value
    Inherits ServicedComponent
    
    Public Sub ValueExample() 
        ' Get the SynchronizationAttribute applied to the class.
        Dim attribute As SynchronizationAttribute = CType(Attribute.GetCustomAttribute(Me.GetType(), GetType(SynchronizationAttribute), False), SynchronizationAttribute)
        
        ' Display the value of the attribute's Value property.
        MsgBox("SynchronizationAttribute.Value: " & attribute.Value)
    
    End Sub
End Class

注解

事务和实时 （JIT） 激活都自动启用同步。

有关使用属性的详细信息，请参阅 “属性”。

SynchronizationAttribute应用于上下文绑定对象会导致创建等待句柄和自动重置事件，这些事件不是确定性的垃圾回收。 因此，不应在短时间内创建大量用标记的 SynchronizationAttribute 上下文绑定对象。