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Checks whether the value from the specified column is NULL.
Visual Basic
Public Overrides Function IsDBNull( _
ByVal columnID As Integer _
) As Boolean
C#
public override bool IsDBNull(
int columnID
);
columnID The ID number of the column. The value must be in the range [0,ULDataReader.FieldCount-1]. The first column in the cursor has an ID value of zero.
True if value is NULL, false if value is not NULL.