AdomdDataReader.IsDBNull Method

  • 發行項

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

命名空間: Microsoft.AnalysisServices.AdomdClient
組件: Microsoft.AnalysisServices.AdomdClient (in microsoft.analysisservices.adomdclient.dll)

語法

'宣告
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

參數

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

傳回值

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

備註

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.

執行緒安全性

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.

平台

開發平台

如需受支援的平台清單，請參閱＜安裝 SQL Server 2005 的硬體和軟體需求＞。

目標平台

如需受支援的平台清單，請參閱＜安裝 SQL Server 2005 的硬體和軟體需求＞。

請參閱

參考

AdomdDataReader Class
AdomdDataReader Members
Microsoft.AnalysisServices.AdomdClient Namespace