ObjectPoolingAttribute 构造函数

参考

定义

命名空间:: System.EnterpriseServices

程序集:: System.EnterpriseServices.dll

重要

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重载

ObjectPoolingAttribute()	初始化 ObjectPoolingAttribute 类的新实例并将 Enabled、MaxPoolSize、MinPoolSize 和 CreationTimeout 属性设置为其默认值。
ObjectPoolingAttribute(Boolean)	初始化 ObjectPoolingAttribute 类的新实例并设置 Enabled 属性。
ObjectPoolingAttribute(Int32, Int32)	初始化 ObjectPoolingAttribute 类的新实例并设置 MaxPoolSize 和 MinPoolSize 属性。
ObjectPoolingAttribute(Boolean, Int32, Int32)	初始化 ObjectPoolingAttribute 类的新实例并设置 Enabled、MaxPoolSize 和 MinPoolSize 属性。

ObjectPoolingAttribute()

初始化 ObjectPoolingAttribute 类的新实例并将 Enabled、MaxPoolSize、MinPoolSize 和 CreationTimeout 属性设置为其默认值。

public:
 ObjectPoolingAttribute();

public ObjectPoolingAttribute ();

Public Sub New ()

示例

下面的代码示例演示如何使用此属性。

#using <System.Windows.Forms.dll>
#using <System.Transactions.dll>
#using <System.EnterpriseServices.dll>

using namespace System;
using namespace System::EnterpriseServices;
using namespace System::Windows::Forms;


[assembly:ApplicationName("ObjectInspector")];
[assembly:ApplicationActivation(ActivationOption::Server)];
[assembly:System::Reflection::AssemblyKeyFile("Inspector.snk")];
[JustInTimeActivation]
[ObjectPooling(MinPoolSize=2,MaxPoolSize=100,CreationTimeout=1000)]
public ref class ObjectInspector: public ServicedComponent
{
public:
   String^ IdentifyObject( Object^ obj )
   {
      // Return this object to the pool after use.
      ContextUtil::DeactivateOnReturn = true;

      // Get the supplied object's type.        
      Type^ objType = obj->GetType();

      // Return its name.
      return (objType->FullName);
   }

protected:
   virtual void Activate() override
   {
      MessageBox::Show( String::Format( "Now entering...\nApplication: {0}\nInstance: {1}\nContext: {2}\n", ContextUtil::ApplicationId.ToString(), ContextUtil::ApplicationInstanceId.ToString(), ContextUtil::ContextId.ToString() ) );
   }

   virtual void Deactivate() override
   {
      MessageBox::Show( "Bye Bye!" );
   }

   // This object can be pooled.
   virtual bool CanBePooled() override
   {
      return (true);
   }
};

using System;
using System.EnterpriseServices;
using System.Windows.Forms;

[assembly: ApplicationName("ObjectInspector")]
[assembly: ApplicationActivation(ActivationOption.Server)]
[assembly: System.Reflection.AssemblyKeyFile("Inspector.snk")]

[JustInTimeActivation]
[ObjectPooling(MinPoolSize=2, MaxPoolSize=100, CreationTimeout=1000)]
public class ObjectInspector : ServicedComponent
{

    public string IdentifyObject (Object obj)
    {
        // Return this object to the pool after use.
        ContextUtil.DeactivateOnReturn = true;

        // Get the supplied object's type.
        Type objType = obj.GetType();

        // Return its name.
        return(objType.FullName);
    }

    protected override void Activate()
    {
        MessageBox.Show( String.Format("Now entering...\nApplication: {0}\nInstance: {1}\nContext: {2}\n",
                                       ContextUtil.ApplicationId.ToString(), ContextUtil.ApplicationInstanceId.ToString(),
                                       ContextUtil.ContextId.ToString() ) );
    }

    protected override void Deactivate()
    {
        MessageBox.Show("Bye Bye!");
    }

    // This object can be pooled.
    protected override bool CanBePooled()
    {
        return(true);
    }
}

Imports System.EnterpriseServices
Imports System.Windows.Forms



<Assembly: ApplicationName("ObjectInspector")> 
<Assembly: ApplicationActivation(ActivationOption.Server)> 
<Assembly: System.Reflection.AssemblyKeyFile("Inspector.snk")> 
 
<JustInTimeActivation(), ObjectPooling(MinPoolSize := 2, MaxPoolSize := 100, CreationTimeout := 1000)>  _
Public Class ObjectInspector
    Inherits ServicedComponent
    
    
    Public Function IdentifyObject(ByVal obj As [Object]) As String 
        ' Return this object to the pool after use.
        ContextUtil.DeactivateOnReturn = True
        
        ' Get the supplied object's type.        
        Dim objType As Type = obj.GetType()
        
        ' Return its name.
        Return objType.FullName
    
    End Function 'IdentifyObject

    Protected Overrides Sub Activate() 
        MessageBox.Show(String.Format("Now entering..." + vbLf + "Application: {0}" + vbLf + "Instance: {1}" + vbLf + "Context: {2}" + vbLf, ContextUtil.ApplicationId.ToString(), ContextUtil.ApplicationInstanceId.ToString(), ContextUtil.ContextId.ToString()))
    
    End Sub

    Protected Overrides Sub Deactivate() 
        MessageBox.Show("Bye Bye!")
    
    End Sub

    ' This object can be pooled.
    Protected Overrides Function CanBePooled() As Boolean 
        Return True
    
    End Function 'CanBePooled

End Class

注解

下表显示了实例 ObjectPoolingAttribute的初始属性值。

属性	值
已启用	`true`
MaxPoolSize	-1
MinPoolSize	-1
CreationTimeout	-1

适用于

ObjectPoolingAttribute(Boolean)

初始化 ObjectPoolingAttribute 类的新实例并设置 Enabled 属性。

public:
 ObjectPoolingAttribute(bool enable);

public ObjectPoolingAttribute (bool enable);

new System.EnterpriseServices.ObjectPoolingAttribute : bool -> System.EnterpriseServices.ObjectPoolingAttribute

Public Sub New (enable As Boolean)

参数

enable: Boolean

如果启用对象池，则为 true；否则为 false。

示例

下面的代码示例创建新的 ObjectPoolingAttribute。

[ObjectPooling(true)]
public ref class ObjectPoolingAttributeCtorBool : public ServicedComponent
{
};

[ObjectPooling(true)]
public class ObjectPoolingAttribute_Ctor_Bool : ServicedComponent
{
}

<ObjectPooling(True)>  _
Public Class ObjectPoolingAttribute_Ctor_Bool
    Inherits ServicedComponent
End Class

适用于

ObjectPoolingAttribute(Int32, Int32)

初始化 ObjectPoolingAttribute 类的新实例并设置 MaxPoolSize 和 MinPoolSize 属性。

public:
 ObjectPoolingAttribute(int minPoolSize, int maxPoolSize);

public ObjectPoolingAttribute (int minPoolSize, int maxPoolSize);

new System.EnterpriseServices.ObjectPoolingAttribute : int * int -> System.EnterpriseServices.ObjectPoolingAttribute

Public Sub New (minPoolSize As Integer, maxPoolSize As Integer)

参数

minPoolSize: Int32

最小池大小。

maxPoolSize: Int32

最大池大小。

示例

下面的代码示例创建新的 ObjectPoolingAttribute。

[ObjectPooling(1, 10)]
public ref class ObjectPoolingAttributeCtorIntInt : public ServicedComponent
{
};

[ObjectPooling(1, 10)]
public class ObjectPoolingAttribute_Ctor_Int_Int : ServicedComponent
{
}

<ObjectPooling(1, 10)>  _
Public Class ObjectPoolingAttribute_Ctor_Int_Int
    Inherits ServicedComponent
End Class

适用于

ObjectPoolingAttribute(Boolean, Int32, Int32)

初始化 ObjectPoolingAttribute 类的新实例并设置 Enabled、MaxPoolSize 和 MinPoolSize 属性。

public:
 ObjectPoolingAttribute(bool enable, int minPoolSize, int maxPoolSize);

public ObjectPoolingAttribute (bool enable, int minPoolSize, int maxPoolSize);

new System.EnterpriseServices.ObjectPoolingAttribute : bool * int * int -> System.EnterpriseServices.ObjectPoolingAttribute

Public Sub New (enable As Boolean, minPoolSize As Integer, maxPoolSize As Integer)

参数

enable: Boolean

如果启用对象池，则为 true；否则为 false。

minPoolSize: Int32

最小池大小。

maxPoolSize: Int32

最大池大小。

示例

下面的代码示例创建新的 ObjectPoolingAttribute。

[ObjectPooling(true, 1, 10)]
public ref class ObjectPoolingAttributeCtorBoolIntInt : 
    public ServicedComponent
{
};

[ObjectPooling(true, 1, 10)]
public class ObjectPoolingAttribute_Ctor_Bool_Int_Int : ServicedComponent
{
}

<ObjectPooling(True, 1, 10)>  _
Public Class ObjectPoolingAttribute_Ctor_Bool_Int_Int
    Inherits ServicedComponent
End Class

适用于

ObjectPoolingAttribute 构造函数

定义

重载

ObjectPoolingAttribute()

示例

注解

适用于

ObjectPoolingAttribute(Boolean)

参数

示例

适用于

ObjectPoolingAttribute(Int32, Int32)

参数

示例

适用于

ObjectPoolingAttribute(Boolean, Int32, Int32)

参数

示例

适用于

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