Replied 8 September 2017, 3:06 pm EST
FilterColumnDefinition.ListBehavior determines how the
filter list is initialized. The default behavior uses
FilterListBehavior.Default, which is a combination of Blank, NonBlank,
and SortAlphabetically, but you can change it to use Custom and define
the list using one or more custom filter item classes inheriting from
DefaultFilterItem or BaseFilterItem. The default behavior uses
DefaultFilterItem, which includes all unique values in the column and
the Blank and NonBlank items in the filter list. A custom filter item
gives you control over how the filtering is performed and how the item
is displayed in the list.
Please have a look at the attached sample in which I define a custom filter to add items to the drop down list in the numeric order. Hope it helps.
Manpreet Kaur 2013/03/FilterNumericData.zip