ObjectPoolingAttribute 建構函式

參考

定義

命名空間:: System.EnterpriseServices

組件:: System.EnterpriseServices.dll

重要

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初始化 ObjectPoolingAttribute 類別的新執行個體。

多載

ObjectPoolingAttribute()	初始化 ObjectPoolingAttribute 類別的新執行個體，並將 Enabled、MaxPoolSize、MinPoolSize 和 CreationTimeout 屬性設定為其預設值。
ObjectPoolingAttribute(Boolean)	初始化 ObjectPoolingAttribute 類別的新執行個體，並且設定 Enabled 屬性。
ObjectPoolingAttribute(Int32, Int32)	初始化 ObjectPoolingAttribute 類別的新執行個體，並設定 MaxPoolSize 和 MinPoolSize 屬性。
ObjectPoolingAttribute(Boolean, Int32, Int32)	初始化 ObjectPoolingAttribute 類別的新執行個體，並設定 Enabled、MaxPoolSize 和 MinPoolSize 屬性。

ObjectPoolingAttribute()

初始化 ObjectPoolingAttribute 類別的新執行個體，並將 Enabled、MaxPoolSize、MinPoolSize 和 CreationTimeout 屬性設定為其預設值。

public:
 ObjectPoolingAttribute();

public ObjectPoolingAttribute ();

Public Sub New ()

範例

下列程式代碼範例示範此屬性的使用方式。

#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

備註

下表顯示實例 ObjectPoolingAttribute的初始屬性值。

屬性	值
啟用	`true`
MaxPoolSize	-1
MinPoolSize	-1
CreationTimeout	-1

適用於

ObjectPoolingAttribute(Boolean)

初始化 ObjectPoolingAttribute 類別的新執行個體，並且設定 Enabled 屬性。

public:
 ObjectPoolingAttribute(bool enable);

public ObjectPoolingAttribute (bool enable);

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

Public Sub New (enable As Boolean)

參數

enable: Boolean

若要啟用物件共用，則為 true，否則為 false。

範例

下列程式代碼範例會建立新的 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

適用於

ObjectPoolingAttribute(Int32, Int32)

初始化 ObjectPoolingAttribute 類別的新執行個體，並設定 MaxPoolSize 和 MinPoolSize 屬性。

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)

參數

minPoolSize: Int32

最小集區大小。

maxPoolSize: Int32

最大集區大小。

範例

下列程式代碼範例會建立新的 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

適用於

ObjectPoolingAttribute(Boolean, Int32, Int32)

初始化 ObjectPoolingAttribute 類別的新執行個體，並設定 Enabled、MaxPoolSize 和 MinPoolSize 屬性。

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)

參數

enable: Boolean

若要啟用物件共用，則為 true，否則為 false。

minPoolSize: Int32

最小集區大小。

maxPoolSize: Int32

最大集區大小。

範例

下列程式代碼範例會建立新的 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

適用於

ObjectPoolingAttribute 建構函式

定義

多載

ObjectPoolingAttribute()

範例

備註

適用於

ObjectPoolingAttribute(Boolean)

參數

範例

適用於

ObjectPoolingAttribute(Int32, Int32)

參數

範例

適用於

ObjectPoolingAttribute(Boolean, Int32, Int32)

參數

範例

適用於

意見反應

其他資源