This documentation is archived and is not being maintained.

ScriptBuffer.IsNull Method

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

Namespace: Microsoft.SqlServer.Dts.Pipeline
Assembly: Microsoft.SqlServer.TxScript (in microsoft.sqlserver.txscript.dll)

protected bool IsNull (
	int ColumnIndex
protected boolean IsNull (
	int ColumnIndex
protected function IsNull (
	ColumnIndex : int
) : boolean



The index of the column.

Return Value

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

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.

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
            Return IsNull(1)
        End Get
        End Set
    End Property

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.

Development Platforms

For a list of the supported platforms, see Hardware and Software Requirements for Installing SQL Server 2005.

Target Platforms