ContextUtil.ActivityId 屬性

定義

命名空間:

System.EnterpriseServices

組件:

System.EnterpriseServices.dll

取得表示包含元件之活動的 GUID。

public:
 static property Guid ActivityId { Guid get(); };

public static Guid ActivityId { get; }

static member ActivityId : Guid

Public Shared ReadOnly Property ActivityId As Guid

屬性值

Guid

如果目前內容為活動的一部分，則為活動的 GUID，否則為 GUID_NULL。

例外狀況

COMException

沒有 COM+ 內容可供使用。

範例

下列程式代碼範例會取得 屬性的值 ActivityId 。

[Synchronization(SynchronizationOption::Required)]
public ref class ContextUtil_ActivityId: public ServicedComponent
{
public:
   void Example()
   {
      // Display the ActivityID associated with the current COM+ context.
      Console::WriteLine( "Activity ID: {0}", ContextUtil::ActivityId );
   }
};

[Synchronization(SynchronizationOption.Required)]
public class ContextUtil_ActivityId : ServicedComponent
{
    public void Example()
    {
        // Display the ActivityID associated with the current COM+ context.
        Console.WriteLine("Activity ID: {0}", ContextUtil.ActivityId);
    }
}

<Synchronization(SynchronizationOption.Required)>  _
Public Class ContextUtil_ActivityId
    Inherits ServicedComponent
    
    Public Sub Example() 
        ' Display the ActivityID associated with the current COM+ context.
        MsgBox("Activity ID: " & ContextUtil.ActivityId.ToString())

    End Sub
End Class