net35-client 
namespace System.Windows.Media.Media3D
{
    [ContentProperty("Children")]
    public sealed class Model3DGroup : Model3D
    {
        protected override void OnChanged();
    }
}
.NET Framework
3.5
Information specific to net35-client
Assembly

PresentationCore , Version=3.0.0.0, PublicKeyToken=31bf3856ad364e35

Referencing

Your project needs to set <UseWPF>True</UseWPF>.

Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API