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Свойство CollectionEnumerator

Gets or sets a Boolean that indicates if the hosting enumerator is enumerating collections of objects or enumerating collections of collections.

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

Синтаксис

'Декларация
Public Property CollectionEnumerator As Boolean
    Get
    Set
'Применение
Dim instance As ForEachEnumeratorHost
Dim value As Boolean

value = instance.CollectionEnumerator

instance.CollectionEnumerator = value

public bool CollectionEnumerator { get; set; }

public:
virtual property bool CollectionEnumerator {
    bool get () sealed;
    void set (bool value) sealed;
}

abstract CollectionEnumerator : bool with get, set
override CollectionEnumerator : bool with get, set

final function get CollectionEnumerator () : boolean
final function set CollectionEnumerator (value : boolean)

Значение свойства

Тип: System. . :: . .Boolean
A Boolean that indicates what the enumerator is iterating over.

Реализует

IDTSForEachEnumerator. . :: . .CollectionEnumerator

Замечания

true indicates that the enumerator is iterating over a collection of collections. If false, the enumerator is iterating over a collection of objects.

Примеры

The following code example creates a ForEachEnumeratorHost to hold a ForEachSMOEnumerator enumerator, and displays the host properties.

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

namespace Microsoft.SqlServer.SSIS.Sample
{
    internal class EnumType
    {
        public const string SMOEnum = "Foreach SMO Enumerator";
    }
    class Program
    {
        static void Main(string[] args)
        {
            Application app = new Application();
            ForEachEnumeratorInfos infos = app.ForEachEnumeratorInfos;
            ForEachEnumeratorInfo info = null;

            foreach (ForEachEnumeratorInfo enumInfo in infos)
            {
                Console.Write("Available enumerators: {0}\n", enumInfo.Name);
                if (enumInfo.Name == EnumType.SMOEnum)
                {
                    // Set the ForEachEnumeratorInfo variable
                    // to the SMo enumerator, and use it 
                    // later in the CreateNew method.
                    info = enumInfo;
                }
        }
            ForEachEnumeratorHost enumH = info.CreateNew();
            Console.WriteLine();
            Console.WriteLine("Host InnerObject: " + enumH.InnerObject.ToString());
            Console.WriteLine("CollectionEnumerator? {0}", enumH.CollectionEnumerator);
            Console.WriteLine("CreationName: {0}",  enumH.CreationName);
            Console.WriteLine("Description:  {0}", enumH.Description);
            Console.WriteLine("Value of DelayValidation: {0}", enumH.DelayValidation);
            Console.WriteLine("HostType:    {0}", enumH.HostType);
            Console.WriteLine("ID:          {0}", enumH.ID);
            Console.WriteLine("Name:        {0}", enumH.Name);
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime.Enumerators.SMO
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace Microsoft.SqlServer.SSIS.Sample
    Friend Class EnumType
        Public const String SMOEnum = "Foreach SMO Enumerator"
    End Class
    Class Program
        Shared  Sub Main(ByVal args() As String)
            Dim app As Application =  New Application() 
            Dim infos As ForEachEnumeratorInfos =  app.ForEachEnumeratorInfos 
            Dim info As ForEachEnumeratorInfo =  Nothing 
 
            Dim enumInfo As ForEachEnumeratorInfo
            For Each enumInfo In infos
                Console.Write("Available enumerators: {0}\n", enumInfo.Name)
                If enumInfo.Name = EnumType.SMOEnum Then
                    ' Set the ForEachEnumeratorInfo variable
                    ' to the SMo enumerator, and use it 
                    ' later in the CreateNew method.
                    info = enumInfo
                End If
            Next
            Dim enumH As ForEachEnumeratorHost =  info.CreateNew() 
            Console.WriteLine()
            Console.WriteLine("Host InnerObject: " + enumH.InnerObject.ToString())
            Console.WriteLine("CollectionEnumerator? {0}", enumH.CollectionEnumerator)
            Console.WriteLine("CreationName: {0}",  enumH.CreationName)
            Console.WriteLine("Description:  {0}", enumH.Description)
            Console.WriteLine("Value of DelayValidation: {0}", enumH.DelayValidation)
            Console.WriteLine("HostType:    {0}", enumH.HostType)
            Console.WriteLine("ID:          {0}", enumH.ID)
            Console.WriteLine("Name:        {0}", enumH.Name)
        End Sub
    End Class
End Namespace

Sample Output:

Available enumerators: Foreach File Enumerator

Available enumerators: Foreach Item Enumerator

Available enumerators: Foreach ADO Enumerator

Available enumerators: Foreach ADO.NET Schema Rowset Enumerator

Available enumerators: Foreach From Variable Enumerator

Available enumerators: Foreach NodeList Enumerator

Available enumerators: Foreach SMO Enumerator

Host InnerObject: Microsoft.SqlServer.Dts.Runtime.Enumerators.SMO.ForEachSMOEnumerator

CollectionEnumerator? False

CreationName: Microsoft.SqlServer.Dts.Runtime.Enumerators.SMO.ForEachSMOEnumerator, Microsoft.SqlServer.ForEachSMOEnumerator, Version=10.0.000.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91

Description:

Value of DelayValidation: False

HostType: ForEachEnumerator

ID: {C91BA4D0-6AD4-4BEE-A7C4-9A737880773E}

Name: {C91BA4D0-6AD4-4BEE-A7C4-9A737880773E}