DataColEnumerator-Klasse

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

Vererbungshierarchie

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

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

Syntax

'Declaration
Public NotInheritable Class DataColEnumerator _
    Implements IEnumerator
'Usage
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

Der DataColEnumerator-Typ macht folgende Elemente verfügbar.

Eigenschaften

	Name	Beschreibung
	Current	Infrastruktur Gets the current object in the collection.

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Methoden

	Name	Beschreibung
	Equals	(Geerbt von Object.)
	GetHashCode	(Geerbt von Object.)
	GetType	(Geerbt von Object.)
	MoveNext	Infrastruktur Indicates whether the enumerator moves to the next element.
	Reset	Infrastruktur Resets the DataColEnumerator to its default configuration.
	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 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.

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