DtsEventHandlers.GetEnumerator Método

Definición

Espacio de nombres:

Microsoft.SqlServer.Dts.Runtime

Ensamblado:

Microsoft.SqlServer.ManagedDTS.dll

Devuelve un enumerador para recorrer la colección DtsEventHandlers.

public:
 Microsoft::SqlServer::Dts::Runtime::DtsEventHandlerEnumerator ^ GetEnumerator();

public Microsoft.SqlServer.Dts.Runtime.DtsEventHandlerEnumerator GetEnumerator ();

override this.GetEnumerator : unit -> Microsoft.SqlServer.Dts.Runtime.DtsEventHandlerEnumerator

Public Function GetEnumerator () As DtsEventHandlerEnumerator

Devoluciones

DtsEventHandlerEnumerator

Objeto DtsEventHandlerEnumerator que se usa para iterar por la colección.

Ejemplos

En el ejemplo de código siguiente se crean dos controladores de eventos para el paquete. Para un controlador de eventos, se agregan dos tareas. A continuación, se crea a DtsEventHandlerEnumerator partir de la Package``EventHandlers colección y usa los Current métodos y MoveNext para navegar por la colección.

using System;  
using System.Collections.Generic;  
using System.Text;  
using Microsoft.SqlServer.Dts.Runtime;  
using Microsoft.SqlServer.Dts.Tasks.SendMailTask;  
using Microsoft.SqlServer.Dts.Tasks.BulkInsertTask;  

namespace DtsEventHandler_API  
{  
    class Program  
    {  
        static void Main(string[] args)  
        {  
            Package pkg = new Package();  

            // Set up a DtsEventHandler for the OnError event of the package.  
            DtsEventHandler dtsEHOE = (DtsEventHandler)pkg.EventHandlers.Add("OnError");  
            DtsEventHandler dtsEHW = (DtsEventHandler)pkg.EventHandlers.Add("OnWarning");  

            // When an OnError Event occurs, the Executables collection contains  
            // the items to run. For this example, there will be a SendMailtTask  
            // and a BulkInsertTask with a precedence constraint between them.  
            Executable dtsEH1 = dtsEHOE.Executables.Add("STOCK:SendMailTask");  
            TaskHost th = (TaskHost)dtsEH1;  
            SendMailTask smTask = (SendMailTask)th.InnerObject;  
            smTask.Subject = "Send Mail task";  

            // Add a second executable to the DtsEventHandler.  
            Executable dtsEH2 = dtsEHOE.Executables.Add("STOCK:BulkInsertTask");  
            TaskHost th2 = (TaskHost)dtsEH2;  

            //Create the Enumerator. Since we added the DtsEventhandler to the   
            // package, then that's where to get the EventHandlers collection.  
            DtsEventHandlerEnumerator myEnum = pkg.EventHandlers.GetEnumerator();  
            Console.WriteLine("The collection contains the following values:");  
            int i = 0;  
            while ((myEnum.MoveNext()) && (myEnum.Current != null))  
                Console.WriteLine("[{0}] {1}", i++, myEnum.Current.Name);  
        }  
    }  
}  

Imports System  
Imports System.Collections.Generic  
Imports System.Text  
Imports Microsoft.SqlServer.Dts.Runtime  
Imports Microsoft.SqlServer.Dts.Tasks.SendMailTask  
Imports Microsoft.SqlServer.Dts.Tasks.BulkInsertTask  

Namespace DtsEventHandler_API  
    Class Program  
        Shared  Sub Main(ByVal args() As String)  
            Dim pkg As Package =  New Package()   

            ' Set up a DtsEventHandler for the OnError event of the package.  
            Dim dtsEHOE As DtsEventHandler = CType(pkg.EventHandlers.Add("OnError"), DtsEventHandler)  
            Dim dtsEHW As DtsEventHandler = CType(pkg.EventHandlers.Add("OnWarning"), DtsEventHandler)  

            ' When an OnError Event occurs, the Executables collection contains  
            ' the items to run. For this example, there will be a SendMailtTask  
            ' and a BulkInsertTask with a precedence constraint between them.  
            Dim dtsEH1 As Executable =  dtsEHOE.Executables.Add("STOCK:SendMailTask")   
            Dim th As TaskHost = CType(dtsEH1, TaskHost)  
            Dim smTask As SendMailTask = CType(th.InnerObject, SendMailTask)  
            smTask.Subject = "Send Mail task"  

            ' Add a second executable to the DtsEventHandler.  
            Dim dtsEH2 As Executable =  dtsEHOE.Executables.Add("STOCK:BulkInsertTask")   
            Dim th2 As TaskHost = CType(dtsEH2, TaskHost)  

            'Create the Enumerator. Since we added the DtsEventhandler to the   
            ' package, then that's where to get the EventHandlers collection.  
            Dim myEnum As DtsEventHandlerEnumerator =  pkg.EventHandlers.GetEnumerator()   
            Console.WriteLine("The collection contains the following values:")  
            Dim i As Integer =  0   
            While (myEnum.MoveNext()) &&(myEnum.Current <> Nothing)  
            Console.WriteLine("[{0}] {1}",i = Console.WriteLine("[{0}] {1}",i + 1  
            End While  
        End Sub  
    End Class  
End Namespace  

Salida del ejemplo:

La colección contiene los siguientes valores:

[0] OnError

[1] OnWarning

Comentarios

El contenedor del que recupera la colección EventHandlers de es el contenedor al que se agregó el evento. Por ejemplo, si escribe esta línea de código, DtsEventHandler dtsEHOE = (DtsEventHandler)pkg.EventHandlers.Add("OnError");, el GetEnumerator elemento estará en la pkg.EventHandlers colección. Si se agregó un evento a un Sequence contenedor mediante el Add método de la Sequence's``EventHandlers colección, recupere el enumerador de nuevo de la Sequence colección de controladores de eventos.