FieldColEnumerator-Klasse

This class is used when the ADO enumerator returns a Dataset or Recordset. This enumerator allows you to enumerate over the fields. This class cannot be inherited.

Vererbungshierarchie

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

Namespace:  Microsoft.SqlServer.Dts.Runtime.Enumerators.ADO
Assembly:  Microsoft.SqlServer.ForEachADOEnumerator (in Microsoft.SqlServer.ForEachADOEnumerator.dll)

Syntax

'Declaration
Public NotInheritable Class FieldColEnumerator _
    Implements IEnumerator
'Usage
Dim instance As FieldColEnumerator

public sealed class FieldColEnumerator : IEnumerator

public ref class FieldColEnumerator sealed : IEnumerator

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

public final class FieldColEnumerator implements IEnumerator

Der FieldColEnumerator-Typ macht folgende Elemente verfügbar.

Eigenschaften

	Name	Beschreibung
	Current	Infrastruktur

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Methoden

	Name	Beschreibung
	Equals	(Geerbt von Object.)
	Finalize	(Geerbt von Object.)
	GetHashCode	(Geerbt von Object.)
	GetType	(Geerbt von Object.)
	MemberwiseClone	(Geerbt von Object.)
	MoveNext	Infrastruktur
	Reset	Infrastruktur
	ToString	(Geerbt von Object.)

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Hinweise

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 field into the enumerator and iterate over it.

Vardisp.LockOneForWrite("VariableThatHadIndexSetToMinus1", vars)

FieldColEnumerator fEnum = (FieldColEnumerator)vars[0]
foreach (object o in fEnum)
{
    // 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.

Threadsicherheit

Alle öffentlichen static (Shared in Visual Basic)-Elemente dieses Typs sind Threadsicher. Für Instanzelemente wird die Threadsicherheit nicht gewährleistet.

Siehe auch

Verweis

Microsoft.SqlServer.Dts.Runtime.Enumerators.ADO-Namespace