AdomdDataReader.IsDBNull Method

Articolo
12/15/2008

Returns a Boolean that contains a value indicating whether the column is set to null.

Spazio dei nomi: Microsoft.AnalysisServices.AdomdClient
Assembly : Microsoft.AnalysisServices.AdomdClient (in microsoft.analysisservices.adomdclient.dll)

Sintassi

'Dichiarazione
Public Function IsDBNull ( _
    ordinal As Integer _
) As Boolean

public bool IsDBNull (
    int ordinal
)

public:
virtual bool IsDBNull (
    int ordinal
) sealed

public final boolean IsDBNull (
    int ordinal
)

public final function IsDBNull (
    ordinal : int
) : boolean

Parametri

ordinal
The zero-based ordinal position of the column to find.

Valore restituito

A Boolean containing true if the column is set to null; false otherwise.

Osservazioni

Call this method to check for null column values before calling the typed methods used to retrieve column values (for example, GetByte, GetChar, and so on), to avoid raising an error.

Thread Safety

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Piattaforme

Piattaforme di sviluppo

Per un elenco delle piattaforme supportate, vedere Requisiti hardware e software per l'Installazione di SQL Server 2005.

Piattaforme di destinazione