# Rhino.Collections namespace

Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md)

## Interfaces

- [IResizableList<T>](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.iresizablelist-1.md): Provides the ability to resize a generic list by setting the Count property.

## Classes

- [ArchivableDictionary](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.archivabledictionary.md): Represents a dictionary class that can be attached to objects and can be serialized (saved) at necessity. See remarks for layout.
- [CurveList](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.curvelist.md): Represents a list of curves.
- [Point3dList](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.point3dlist.md): Represents a list of [Point3d](https://developer.rhino3d.com/api/rhinocommon/type/rhino.geometry.point3d.md).
- [Point3dList.XAccess](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.point3dlist.xaccess.md): Utility class for easy-access of x-components of points inside an ON_3dPointList.
- [Point3dList.YAccess](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.point3dlist.yaccess.md): Utility class for easy-access of x-components of points inside an ON_3dPointList.
- [Point3dList.ZAccess](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.point3dlist.zaccess.md): Utility class for easy-access of z-components of points inside an ON_3dPointList.
- [RhinoList](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.rhinolist.md): Provides helper methods to work with [RhinoList<T>](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.rhinolist-1.md) and other collections.
- [RhinoList<T>](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.rhinolist-1.md): Represents a list of generic data. This class is similar to System.Collections.Generic.List(T) but exposes a few more methods.
- [TransformObjectList](https://developer.rhino3d.com/api/rhinocommon/type/rhino.collections.transformobjectlist.md): A collection of Rhino object, grip objects, and the Rhino objects that owns the grips. Used by the TransformCommand and GetTransform classes.