Classe DataColEnumerator

Hiérarchie d'héritage

System. . :: . .Object
  Microsoft.SqlServer.Dts.Runtime.Enumerators.ADO..::..DataColEnumerator

Syntaxe

'Déclaration
Public NotInheritable Class DataColEnumerator _
    Implements IEnumerator
'Utilisation
Dim instance As DataColEnumerator

public sealed class DataColEnumerator : IEnumerator

public ref class DataColEnumerator sealed : IEnumerator

[<SealedAttribute>]
type DataColEnumerator =  
    class
        interface IEnumerator
    end

public final class DataColEnumerator implements IEnumerator

Propriétés

	Nom	Description
	Current	Infrastructure.

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Méthodes

	Nom	Description
	Equals	(hérité de Object.)
	Finalize	(hérité de Object.)
	GetHashCode	(hérité de Object.)
	GetType	(hérité de Object.)
	MemberwiseClone	(hérité de Object.)
	MoveNext	Infrastructure.
	Reset	Infrastructure.
	ToString	(hérité de Object.)

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Notes

The members of this class cannot be used directly. This class is used by the foreach keyword (For Each in Visual Basic). The following code example is a piece of a foreach loop showing simply how to use indexing to place a data column into the enumerator and iterate over it.

Vardisp.LockOneForWrite("VariableThatHadIndexSetToMinus1", vars)

DataColEnumerator dcEnum = (DataColEnumerator)vars[0]
foreach (object o in dcEnum)
{
    // Do something with o, 
    // where o is the value of the column, just as you would get
    // if you had a variable for a specific index.
}

You must set the index for the variable mapping to -1 to retrieve the entire collection into the variable, instead of retrieving just a column which is based on an index, so then you can access it directly.

Sécurité des threads

Tous les membres publics static (Shared dans Visual Basic) de ce type sont thread-safe. Tous les membres de l'instance ne sont pas garantis comme étant thread-safe.

Voir aussi

Référence