Método AdomdDataReader.IsDBNull
Returns a Boolean that contains a value indicating whether the column is set to null.
Namespace: Microsoft.AnalysisServices.AdomdClient
Assembly: Microsoft.AnalysisServices.AdomdClient (em Microsoft.AnalysisServices.AdomdClient.dll)
Sintaxe
'Declaração
Public Function IsDBNull ( _
ordinal As Integer _
) As Boolean
'Uso
Dim instance As AdomdDataReader
Dim ordinal As Integer
Dim returnValue As Boolean
returnValue = instance.IsDBNull(ordinal)
public bool IsDBNull(
int ordinal
)
public:
virtual bool IsDBNull(
int ordinal
) sealed
abstract IsDBNull :
ordinal:int -> bool
override IsDBNull :
ordinal:int -> bool
public final function IsDBNull(
ordinal : int
) : boolean
Parâmetros
- ordinal
Tipo: System.Int32
The zero-based ordinal position of the column to find.
Valor de retorno
Tipo: System.Boolean
A Boolean containing true if the column is set to nulluma referência nula (Nothing no Visual Basic); false otherwise.
Implementa
Comentários
Call this method to check for nulluma referência nula (Nothing no Visual Basic) column values before calling the typed methods used to retrieve column values (for example, GetByte, GetChar, and so on), to avoid raising an error.