<PackageReference Include="System.Reactive" Version="6.0.0-preview.9" />

System.Reactive.Concurrency.ControlScheduler

Represents an object that schedules units of work on the message loop associated with a Windows Forms control.
namespace System.Reactive.Concurrency { public class ControlScheduler : LocalScheduler, ISchedulerPeriodic { public Control Control { get; } public ControlScheduler(Control control); public IDisposable SchedulePeriodic<[System.Runtime.CompilerServices.Nullable(2)] TState>(TState state, TimeSpan period, Func<TState, TState> action); } }