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.
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
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.
Vererbungshierarchie
System. . :: . .Object
Microsoft.SqlServer.Dts.Runtime.Enumerators.ADO..::..FieldColEnumerator
Threadsicherheit
Alle öffentlichen static (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.