ElementIsCurveDrivenFilter

Description:
A filter used to match elements which are curve driven.

Remarks:
The term "curve driven" indicates that the element's Location property is a LocationCurve. Example elements found by this filter include walls, beams, and curve elements. This filter is a quick filter. Quick filters operate only on the ElementRecord, a low-memory class which has a limited interface to read element properties. Elements which are rejected by a quick filter will not be expanded in memory.

Inheritance Hierarchy:
System.Object
  Autodesk.Revit.DB.ElementFilter
    Autodesk.Revit.DB.ElementQuickFilter
      Autodesk.Revit.DB.ElementIsCurveDrivenFilter

public class ElementIsCurveDrivenFilter : ElementQuickFilter

Public Class ElementIsCurveDrivenFilter _
	Inherits ElementQuickFilter

public ref class ElementIsCurveDrivenFilter : public ElementQuickFilter

// Create an ElementIsCurveDriven filter to find slanted columns(which is curve-driven) in the document,
// The term "curve driven" indicates that the element's Location property is a LocationCurve
ElementIsCurveDrivenFilter filter = new ElementIsCurveDrivenFilter();

// Apply the filter to the elements in the active document,
// Use the ElementIsCurveDrivenFilter on columns to find only slanted columns (vertical columns 
// are placed at a single point).
FilteredElementCollector collector = new FilteredElementCollector(document);
ICollection<Element> slantColumns = collector
    .WherePasses(filter).OfCategory(BuiltInCategory.OST_StructuralColumns).ToElements();

// Find elements of not curve driven: use inverted filter to match elements
ElementIsCurveDrivenFilter notCurveDrivenFilter = new ElementIsCurveDrivenFilter(true); // inverted filter
collector = new FilteredElementCollector(document);
ICollection<Element> notCurveDrivenFounds = collector.WherePasses(notCurveDrivenFilter).ToElements();

' Create an ElementIsCurveDriven filter to find slanted columns(which is curve-driven) in the document,
' The term "curve driven" indicates that the element's Location property is a LocationCurve
Dim filter As New ElementIsCurveDrivenFilter()

' Apply the filter to the elements in the active document,
' Use the ElementIsCurveDrivenFilter on columns to find only slanted columns (vertical columns 
' are placed at a single point).
Dim collector As New FilteredElementCollector(document)
Dim slantColumns As ICollection(Of Element) = collector.WherePasses(filter).OfCategory(BuiltInCategory.OST_StructuralColumns).ToElements()

' Find elements of not curve driven: use inverted filter to match elements
Dim notCurveDrivenFilter As New ElementIsCurveDrivenFilter(True)
' inverted filter
collector = New FilteredElementCollector(document)
Dim notCurveDrivenFounds As ICollection(Of Element) = collector.WherePasses(notCurveDrivenFilter).ToElements()

Name	Return Type	Description	Inherited From
C ElementIsCurveDrivenFilter()	None	Constructs a new instance of a filter to match only curve driven elements.
C ElementIsCurveDrivenFilter(Boolean)	None	Constructs a new instance of a filter to match only curve driven elements, with the option to match all elements which are not curve driven elements.

Name	Return Type	Description	Inherited From
M Dispose()	None	Releases all resources used by the	ElementFilter
M PassesFilter(Document, ElementId)	bool	Applies the filter to a given element.	ElementFilter
M PassesFilter(Element)	bool	Applies the filter to a given element.	ElementFilter

Name	Return Type	Description	Inherited From
P Inverted	bool	True if the results of the filter are inverted; elements that would normally be accepted by this filter will be rejected, and elements that would normally be rejected will be accepted.	ElementFilter
P IsValidObject	bool	Specifies whether the .NET object represents a valid Revit entity.	ElementFilter