Метод ForEachEnumeratorInfos.Contains

Статья
04/26/2013

Specifies whether an item can be retrieved from the ForEachEnumeratorInfos collection using indexing without throwing an exception.

Пространство имен: Microsoft.SqlServer.Dts.Runtime
Сборка: Microsoft.SqlServer.ManagedDTS (в Microsoft.SqlServer.ManagedDTS.dll)

Синтаксис

'Декларация
Public Function Contains ( _
    index As Object _
) As Boolean
'Применение
Dim instance As ForEachEnumeratorInfos 
Dim index As Object 
Dim returnValue As Boolean 

returnValue = instance.Contains(index)

public bool Contains(
    Object index
)

public:
bool Contains(
    Object^ index
)

member Contains : 
        index:Object -> bool

public function Contains(
    index : Object
) : boolean

Параметры

index
Тип: System.Object
The name, ID, or index of the object to return from the collection.

Возвращаемое значение

Тип: System.Boolean
A Boolean that indicates whether items can be retrieved using indexing. A value of true indicates that the syntax ForEachEnumeratorInfos[x] can be used without throwing an exception. A value of false indicates that indexing cannot be used to retrieve items from the ForEachEnumeratorInfos collection.

Примеры

The following code sample uses the Contains method to determine if an enumerator with the name "For Each File Enumerator" is in the collection. The method returns a Boolean.

Примечание
To use the following code sample with a locale other than English, change the string, "For Each File Enumerator", to the localized name of the enumerator.

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

namespace ForEachEnums
{
    class Program
    {
        static void Main(string[] args)
        {
            Application app = new Application();
            ForEachEnumeratorInfos feInfos = app.ForEachEnumeratorInfos;

            // Search the collection by name.
            if (feInfos.Contains("For Each File Enumerator"))
                Console.WriteLine("The collection contains {0} enumerator", feInfos[0].Name);
            else
                Console.WriteLine("The collection does not contain {0} enumerator", feInfos[0].Name);
        }
    }
}

Sample Output:

The collection contains For Each File Enumerator enumerator

См. также

Справочник

ForEachEnumeratorInfos Класс

Пространство имен Microsoft.SqlServer.Dts.Runtime

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