HasNoValueFilterRule Class

Tests whether an element's parameter doesn't have a value.

Inheritance Hierarchy

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

public class HasNoValueFilterRule : ParameterValuePresenceRule

Public Class HasNoValueFilterRule
	Inherits ParameterValuePresenceRule

public ref class HasNoValueFilterRule : public ParameterValuePresenceRule

type HasNoValueFilterRule = 
    class
        inherit ParameterValuePresenceRule
    end

The HasNoValueFilterRule type exposes the following members.

Constructors

	Name	Description
	HasNoValueFilterRule	constructs an instance of HasNoValueFilterRule.

Properties

	Name	Description
	IsValidObject	Specifies whether the .NET object represents a valid Revit entity. (Inherited from FilterRule)
	Parameter	The parameter which will be evaluated to pass this rule. (Inherited from ParameterValuePresenceRule)

Methods

	Name	Description
	Dispose	(Inherited from FilterRule)
	ElementPasses	Derived classes override this method to implement the test that determines whether the given element passes this rule or not. (Inherited from FilterRule)
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
	GetHashCode	Serves as the default hash function. (Inherited from Object)
	GetRuleParameter	Returns the ElementId of the parameter associated to this FilterRule if there is one, or invalidElementId if there is no associated parameter. (Inherited from FilterRule)
	GetType	Gets the Type of the current instance. (Inherited from Object)
	ToString	Returns a string that represents the current object. (Inherited from Object)