'宣言
Protected Friend Overridable Function OnFiltering( _
ByVal column As Infragistics.Controls.Grids.Column, _
ByVal operand As Infragistics.Controls.Grids.FilterOperand, _
ByVal As Infragistics.Controls.Grids.RowFiltersCollection, _
ByVal As Object _
) As Boolean
protected internal virtual bool OnFiltering(
Infragistics.Controls.Grids.Column column,
Infragistics.Controls.Grids.FilterOperand operand,
Infragistics.Controls.Grids.RowFiltersCollection ,
object
)