Demonstrates calling non-thread-safe code using an exclusive TaskScheduler with an async delegate.

ExclusiveTaskSchedulerWithAsyncWork.cs

public class ThreadSafeDictionary<K, V>
{
  private readonly TaskScheduler exclusiveScheduler = new ConcurrentExclusiveSchedulerPair().ExclusiveScheduler;
  private readonly Dictionary<K, V> inner = new Dictionary<K, V>();

  public Task AddThenRemoveAsync(K key, V value, CancellationToken cancellationToken = default(CancellationToken)) {
    return TaskScheduler.Factory.StartNew(
      async delegate {
        this.inner.Add(key, value);
        await Task.Delay(50);
        this.inner.Remove(key);
      },
      cancellationToken,
      TaskCreationOptions.None,
      this.exclusiveScheduler).Unwrap(); // Unwrap() is very important!
  }
}