PipelineBuffer.IsNull Method

  • 發行項

Checks to see if the data in a buffer column is null.

命名空間: Microsoft.SqlServer.Dts.Pipeline
組件: Microsoft.SqlServer.PipelineHost (in microsoft.sqlserver.pipelinehost.dll)

語法

'宣告
Public Function IsNull ( _
    columnIndex As Integer _
) As Boolean

public bool IsNull (
    int columnIndex
)

public:
bool IsNull (
    int columnIndex
)

public boolean IsNull (
    int columnIndex
)

public function IsNull (
    columnIndex : int
) : boolean

參數

  • columnIndex
    The index of the column in the buffer row.

傳回值

true if the column contains null; otherwise, false.

備註

It is recommended that you call the IsNull method prior to calling a data type accessor method, such as GetBoolean, because the PipelineBuffer will produce a ColumnIsNullException if the column is null.

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

PipelineBuffer Class
PipelineBuffer Members
Microsoft.SqlServer.Dts.Pipeline Namespace