public sealed class Context : IDisposable

Create a Context through Registry.CreateVisualizationContext. The context remains valid until you call Context.Dispose. While the context is alive, you can apply visualization changes to graph elements (retrieved as references) in the associated graph. Each context has a unique Context.VisualizationContextID assigned at creation, which lets you distinguish ownership when multiple consumers operate on the same graph. Disposing the context unregisters it from the Registry and clears any visualization data added through it.

Additional Resources: Registry, GraphMotion

Create a visualization context for a graph, retrieve a port reference from it, and set a port preview value. The using statement ensures the context is disposed when no longer needed.

using Context context = Registry.CreateVisualizationContext(graphID);PortReference port = context.GetPortReference(portUID);port.SetPreview("42.0");