ScriptBuffer.IsNull Method

Returns a value that indicates whether the value of the specified column is null.

네임스페이스: Microsoft.SqlServer.Dts.Pipeline
어셈블리: Microsoft.SqlServer.TxScript (in microsoft.sqlserver.txscript.dll)

구문

‘선언
Protected Function IsNull ( _
    ColumnIndex As Integer _
) As Boolean

protected bool IsNull (
    int ColumnIndex
)

protected:
bool IsNull (
    int ColumnIndex
)

protected boolean IsNull (
    int ColumnIndex
)

protected function IsNull (
    ColumnIndex : int
) : boolean

매개 변수

• ColumnIndex
  The index of the column.

반환 값

true if the value of the specified column is null; otherwise, false.

주의

The Script component developer does not use the ScriptBuffer class directly, but indirectly, through the derived classes in the BufferWrapper project item that represent the component's input and outputs.

The developer does not have to use the IsNull method, because the derived classes contain a <ColumnX>_IsNull property for each column.

예

The following sample code from the autogenerated BufferWrapper project item demonstrates how the Script component uses the IsNull method.

    Public Property [city_IsNull] As Boolean
        Get
            Return IsNull(1)
        End Get
        Set
            SetNull(1)
        End Set
    End Property

스레드 보안

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.

플랫폼

개발 플랫폼

지원되는 플랫폼 목록은 SQL Server 2005 설치를 위한 하드웨어 및 소프트웨어 요구 사항을 참조하십시오.

대상 플랫폼

지원되는 플랫폼 목록은 SQL Server 2005 설치를 위한 하드웨어 및 소프트웨어 요구 사항을 참조하십시오.

참고 항목

참조

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