PipelineBuffer.IsNull 메서드
Checks to see if the data in a buffer column is null.
네임스페이스: Microsoft.SqlServer.Dts.Pipeline
어셈블리: Microsoft.SqlServer.PipelineHost(Microsoft.SqlServer.PipelineHost.dll)
구문
‘선언
Public Function IsNull ( _
columnIndex As Integer _
) As Boolean
‘사용 방법
Dim instance As PipelineBuffer
Dim columnIndex As Integer
Dim returnValue As Boolean
returnValue = instance.IsNull(columnIndex)
public bool IsNull(
int columnIndex
)
public:
bool IsNull(
int columnIndex
)
member IsNull :
columnIndex:int -> bool
public function IsNull(
columnIndex : int
) : boolean
매개 변수
- columnIndex
유형: System.Int32
The index of the column in the buffer row.
반환 값
유형: System.Boolean
true if the column contains nullnull 참조(Visual Basic에서는 Nothing); otherwise, false.
주의
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 nullnull 참조(Visual Basic에서는 Nothing).