TcxCustomTreeList.OnFindCriteriaBeforeChange Event

Enables you to identify and track any changes made to data search criteria before they take effect on the tree list control.

Declaration

property OnFindCriteriaBeforeChange: TcxDataFindCriteriaBeforeChangeEvent read; write;

Remarks

This event occurs every time:

• The FindCriteria.Text, FindCriteria.UseExtendedSyntax, or FindCriteria.Behavior property value changes.

• A FindCriteria.AddItem, FindCriteria.RemoveItem, or FindCriteria.ClearItems procedure call changes the list of search sources.

• The tree list control changes the list of columns available for search operations (for instance, when a column’s Options.FilteringWithFindPanel property value changes).

Refer to the TcxDataFindCriteriaBeforeChangeEvent procedural type description for detailed information on parameters accessible within an OnFindCriteriaBeforeChange event handler.