Tests whether an element's parameter has a value or not.
Inheritance Hierarchy
System.ObjectAutodesk.Revit.DB.FilterRule
Autodesk.Revit.DB.ParameterValuePresenceRule
Autodesk.Revit.DB.HasNoValueFilterRule
Autodesk.Revit.DB.HasValueFilterRule
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)
Syntax
C#
public class ParameterValuePresenceRule : FilterRule
The ParameterValuePresenceRule type exposes the following members.
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. |
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) |