HasNoValueFilterRule

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

Inheritance Hierarchy:
System.Object
  Autodesk.Revit.DB.FilterRule
    Autodesk.Revit.DB.ParameterValuePresenceRule
      Autodesk.Revit.DB.HasNoValueFilterRule

public class HasNoValueFilterRule : ParameterValuePresenceRule

Public Class HasNoValueFilterRule
	Inherits ParameterValuePresenceRule

public ref class HasNoValueFilterRule : public ParameterValuePresenceRule

type HasNoValueFilterRule = 
    class
        inherit ParameterValuePresenceRule
    end

Name	Return Type	Description	Inherited From
C HasNoValueFilterRule(ElementId)	None	constructs an instance of HasNoValueFilterRule.

Name	Return Type	Description	Inherited From
M Dispose()	None	(Inherited from FilterRule )	FilterRule
M ElementPasses(Element)	Boolean	Derived classes override this method to implement the test that determines whether the given element passes this rule or not. (Inherited from FilterRule )	FilterRule
M Equals	None	Determines whether the specified object is equal to the current object. (Inherited from Object )	Object
M GetHashCode	None	Serves as the default hash function. (Inherited from Object )	Object
M GetRuleParameter()	ElementId	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 )	FilterRule
M GetType	None	Gets the Type of the current instance. (Inherited from Object )	Object
M ToString	None	Returns a string that represents the current object. (Inherited from Object )	Object

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