Propriedade do RDL DtsEventHandlers.Item
Gets a DtsEventHandler object from the collection.
Namespace: Microsoft.SqlServer.Dts.Runtime
Assembly: Microsoft.SqlServer.ManagedDTS (em Microsoft.SqlServer.ManagedDTS.dll)
Sintaxe
'Declaração
Public ReadOnly Default Property Item ( _
index As Object _
) As DtsEventHandler
Get
'Uso
Dim instance As DtsEventHandlers
Dim index As Object
Dim value As DtsEventHandler
value = instance(index)
public DtsEventHandler this[
Object index
] { get; }
public:
property DtsEventHandler^ default[Object^ index] {
DtsEventHandler^ get (Object^ index);
}
member Item : DtsEventHandler
JScript dá suporte ao uso de propriedades indexadas, mas não à declaração de propriedades novas.
Parâmetros
- index
Tipo: System.Object
The name, ID, or index of the DtsEventHandler object to return from the collection.
Valor da propriedade
Tipo: Microsoft.SqlServer.Dts.Runtime.DtsEventHandler
A DtsEventHandler object from the collection.
Comentários
If the call to the Contains method returns true, you can access the specified element in the collection by using the syntax DtsEventHandlers[index]. If the Contains method returns false, this property throws an exception. In C#, this property is the indexer for the DtsEventHandlers class.
Exemplos
The following code example retrieves the DtsEventHandlers collection, then uses Contains to see if the item syntax [x] can be used on the collection.
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
Sample Output:
Item syntax can be used? True
The ID of the first event handler is: {4B9E438E-BA17-4A51-8235-3072AFF92F99}
The Name of the first event handler is: OnError