public FrameView WhereNotNull(
	params string[] columnNames
)Public Function WhereNotNull ( 
	ParamArray columnNames As String()
) As FrameViewpublic:
FrameView^ WhereNotNull(
	... array<String^>^ columnNames
)member WhereNotNull : 
        columnNames : string[] -> FrameView If no column names are given, rows with nulls in any column are removed.