Execute a specific business rule

[Chicagoan2016]

Can we execute a specific business rule? We are asked to show a broken rule message when a user leaves some textboxes.
I know we have CheckRules(property) but that would execute all the rules for that property.
Kind Regards

[hurcane]

The rules engine has methods for all rules and rules per property, but not specific rules. What is the concern with running all rules for the property? Why is it important to only have the one rule execute?

[Chicagoan2016]

The property related to the textbox have several business rules like required, certain format etc.
The user wants to alerted only about incorrect format (when they leave the text box).

[hurcane]

So they want no notification that the field is required? I would classify that request as a UI concern, and not a business rule concern. You still need the other rules to run to ensure a valid entity.

I would code an independent filter in the UI project to only show the requested broken rule names.

[Chicagoan2016]

@hurcane, We do get some strange requests once in a while : ).
I could code that in UI.

[rockfordlhotka]

I really think this is a UI concern.

Your UI code can look at the broken rules collection and filter on the rule uri to show the rule(s) you need.

[Chicagoan2016]

@rockfordlhotka I could iterate through 'BrokenRulesCollection' and find the business rule

[ajohnstone-ks]

@Chicagoan2016 Could you set the rule you want as the lowest priorty and then StopProcessing if it fails?