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StructuralInstanceUsageFilter

Class
Description:
A filter used to find elements that are structural family instances (typically columns, beams or braces) of the given structural usage.
Remarks:
This filter is a slow filter, but it uses a quick filter to eliminate non-candidate elements before the elements are obtained and expanded. Therefore this filter does not have to be paired with another quick filter to minimize the number of Elements that are expanded.
Inheritance Hierarchy:
System.Object
  Autodesk.Revit.DB.ElementFilter
    Autodesk.Revit.DB.ElementSlowFilter
      Autodesk.Revit.DB.Structure.StructuralInstanceUsageFilter
Syntax
public class StructuralInstanceUsageFilter : ElementSlowFilter