AdomdDataReader.IsDBNull Method

Статья
12/15/2008

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

Пространство имен: Microsoft.AnalysisServices.AdomdClient
Сборка: Microsoft.AnalysisServices.AdomdClient (in microsoft.analysisservices.adomdclient.dll)

Синтаксис

'Декларация
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

Параметры

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

Возвращаемое значение

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

Замечания

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.

Синхронизация потоков

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.

Платформы

Платформы разработки

Список поддерживаемых платформ см. в разделе Hardware and Software Requirements for Installing SQL Server 2005.

Целевые платформы