Share via


IDTSBuffer100.IsNull Method

Checks whether a specified column is null.

Namespace:  Microsoft.SqlServer.Dts.Pipeline.Wrapper
Assembly:  Microsoft.SqlServer.DTSPipelineWrap (in Microsoft.SqlServer.DTSPipelineWrap.dll)

Syntax

'Declaration
Sub IsNull ( _
    hRow As Integer, _
    hCol As Integer, _
    <OutAttribute> ByRef pfNull As Boolean _
)
'Usage
Dim instance As IDTSBuffer100 
Dim hRow As Integer 
Dim hCol As Integer 
Dim pfNull As Boolean

instance.IsNull(hRow, hCol, pfNull)
void IsNull(
    int hRow,
    int hCol,
    out bool pfNull
)
void IsNull(
    [InAttribute] int hRow, 
    [InAttribute] int hCol, 
    [InAttribute] [OutAttribute] bool% pfNull
)
abstract IsNull : 
        hRow:int * 
        hCol:int * 
        pfNull:bool byref -> unit
function IsNull(
    hRow : int, 
    hCol : int, 
    pfNull : boolean
)

Parameters

  • pfNull
    Type: System.Boolean%
    An out parameter that indicates whether the column value is null.

Remarks

This method checks whether the data stored in the buffer column is null or empty. Managed data flow component developers do not call this method, but instead use the IsNull method of the managed PipelineBuffer class.

See Also

Reference

IDTSBuffer100 Interface

Microsoft.SqlServer.Dts.Pipeline.Wrapper Namespace