In addition to creating and managing conditional formatting rules through code, Rules Manager enables performing all these actions at runtime using the control's UI. It supports the use of built-in conditions or the creation of custom expressions using the expression parser and formula editor at runtime.

Add a Rule at Runtime

Click the Add Rule button to add rule during runtime.

Rules can be stylized using a style picker. However, style picker is only used inside expression and segments rules and allows changing the different properties of a RuleEngineStyle.

Delete a rule at Runtime

• Click on the Ellipsis (...) beside the rule to extend menu.
• Click the delete button (x)

Apply Conditional Formatting 

For FlexGrid, ConditionalFormattingBehavior is a built-in adapter so anyone can easily display the rules inside C1FlexGrid. 

Click on the ellipsis (...) beside the column header to open the drop-down menu.

The following actions can be performed through the drop-down menu:

• Choose the preferred type of format for Color Scale rule and Data bar rule
• Click on New Rule to create a new rule and click apply
• Click on Manage Rule from the drop-down menu to add, edit and delete any rule
• Click Icon Sets to add any icons to the data.

Note: These menus can be disabled by setting ShowInColumnHeaderMenu=false