Method If

If<T>(IEligibilityBuilder<T>, Predicate<T>)

Returns an IEligibilityBuilder that conditionally applies rules based on a predicate. Rules added to the returned builder are only evaluated if the condition is satisfied.

Declaration

Full screen

public static IEligibilityBuilder<T> If<T>(this IEligibilityBuilder<T> eligibilityBuilder, Predicate<T> condition) where T : class

Parameters

Type	Name	Description
IEligibilityBuilder<T>	eligibilityBuilder	The parent eligibility builder.
Predicate<T>	condition	A predicate that determines whether the following rules should be evaluated. If this returns `false`, the rules are ignored and the declaration is considered eligible (for those rules).

Returns

Type	Description
IEligibilityBuilder<T>	An eligibility builder where rules are only evaluated when the condition is true.

Type Parameters

Name	Description
T	The type of declaration being validated.

Remarks

Use this method when eligibility depends on a condition. For example, you might require static methods to have no parameters, but allow instance methods to have parameters. The rules added after If only apply when the condition is met.

This is conceptually similar to: "If the declaration is X, then it must also satisfy Y." If the declaration is not X, the Y requirement is ignored.