AsyncHelper.cs

using System;
using System.Threading;
using System.Threading.Tasks;

namespace Labyrinthian.Svg
{
    internal static class AsyncHelper
    {
        private static readonly TaskFactory s_myTaskFactory = new
          TaskFactory(CancellationToken.None,
                      TaskCreationOptions.None,
                      TaskContinuationOptions.None,
                      TaskScheduler.Default);

        public static TResult RunSync<TResult>(Func<Task<TResult>> func)
        {
            return s_myTaskFactory
              .StartNew(func)
              .Unwrap()
              .GetAwaiter()
              .GetResult();
        }

        public static void RunSync(Func<Task> func)
        {
            s_myTaskFactory
              .StartNew(func)
              .Unwrap()
              .GetAwaiter()
              .GetResult();
        }
    }
}