DtsEventHandlers.Item[Object] Propiedad

public:
 property Microsoft::SqlServer::Dts::Runtime::DtsEventHandler ^ default[System::Object ^] { Microsoft::SqlServer::Dts::Runtime::DtsEventHandler ^ get(System::Object ^ index); };

public Microsoft.SqlServer.Dts.Runtime.DtsEventHandler this[object index] { get; }

member this.Item(obj) : Microsoft.SqlServer.Dts.Runtime.DtsEventHandler

Default Public ReadOnly Property Item(index As Object) As DtsEventHandler

Parámetros

Valor de propiedad

Objeto DtsEventHandler de la colección.

Ejemplos

En el ejemplo de código siguiente se recupera la DtsEventHandlers colección y, a continuación, se usa Contains para ver si la sintaxis [x] del elemento se puede usar en la colección.

using System;  
using System.Collections.Generic;  
using System.Text;  
using Microsoft.SqlServer.Dts.Runtime;  

namespace Microsoft.SqlServer.SSIS.Samples  
{  
    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");  

            // Create the DtsEventHandlers collection.  
            DtsEventHandlers dtsEHColls = pkg.EventHandlers;  

            // Use the Contains method to see if the item[x] syntax can be used.  
            Boolean dtsContains = dtsEHColls.Contains(0);  
            Console.WriteLine("Item syntax can be used?  {0}", dtsContains);  

            //Using the Item method syntax of [x], obtain the first entry and a name.  
            DtsEventHandler dtsEHFirstEntry = dtsEHColls[0];  
            String nameOfFirstItem = dtsEHColls[0].Name;  

            //Print the name of the log provider object located at position [0].  
            Console.WriteLine("The ID of the first event handler is: {0}", dtsEHFirstEntry.ID);  
            Console.WriteLine("The Name of the first event handler is: {0}", nameOfFirstItem);  
        }  
    }  
}  

Imports System  
Imports System.Collections.Generic  
Imports System.Text  
Imports Microsoft.SqlServer.Dts.Runtime  

Namespace Microsoft.SqlServer.SSIS.Samples  
    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)  

            ' Create the DtsEventHandlers collection.  
            Dim dtsEHColls As DtsEventHandlers =  pkg.EventHandlers   

            ' Use the Contains method to see if the item[x] syntax can be used.  
            Dim dtsContains As Boolean =  dtsEHColls.Contains(0)   
            Console.WriteLine("Item syntax can be used?  {0}", dtsContains)  

            'Using the Item method syntax of [x], obtain the first entry and a name.  
            Dim dtsEHFirstEnTry As DtsEventHandler =  dtsEHColls(0)   
            Dim nameOfFirstItem As String =  dtsEHColls(0).Name   

            'Print the name of the log provider object located at position [0].  
            Console.WriteLine("The ID of the first event handler is: {0}", dtsEHFirstEnTry.ID)  
            Console.WriteLine("The Name of the first event handler is: {0}", nameOfFirstItem)  
        End Sub  
    End Class  
End Namespace  

Salida del ejemplo:

¿Se puede usar la sintaxis de elemento? Verdadero

El identificador del primer controlador de eventos es: {4B9E438E-BA17-4A51-8235-3072AFF92F99}

El nombre del primer controlador de eventos es: OnError

Comentarios

Si la llamada al Contains método devuelve true, puede tener acceso al elemento especificado de la colección mediante la sintaxis DtsEventHandlers[index]. Si el Contains método devuelve false, esta propiedad produce una excepción. En C#, esta propiedad es el indizador para la clase DtsEventHandlers.

Se aplica a