using System;

using System.Transactions;

using System.Threading;

using System.Threading.Tasks;

​

public class Program

{

    public static async Task Main()

    {

        Console.WriteLine("Hello1 World");

        await AsyncMethod1().ConfigureAwait(false);

        Console.WriteLine($"{Transaction.Current != null} inside Main");

        var tx = (CommittableTransaction)Transaction.Current;

        tx.Commit();

        tx.Dispose();

    }

​

    class ContextHolder

    {

        public ExecutionContext Context { get; set; }

​

        public Transaction Transaction { get; set; }

    }

​

    static async Task AsyncMethod1()

    {

        var holder = new ContextHolder();

        await AsyncMethod2(holder).ConfigureAwait(false);

        Transaction.Current = holder.Transaction;

        await Task.Delay(50).ConfigureAwait(false);

        //Console.WriteLine($"{holder.Transaction != null} inside Method1");

        //ExecutionContext.Restore(holder.Context);

        //Transaction.Current = holder.Transaction;

        Console.WriteLine($"{Transaction.Current != null} inside Method1");

    }

​

    // switch to async and Method1 will be false

    static async Task AsyncMethod2(ContextHolder holder)

    {

        //holder.Context = ExecutionContext.Capture();

        var options = new TransactionOptions{IsolationLevel = IsolationLevel.Serializable, Timeout = TimeSpan.FromSeconds(10) // TimeSpan.Zero is default of `TransactionOptions.Timeout`

        };

        var transactionScope = new TransactionScope(TransactionScopeOption.RequiresNew, options, TransactionScopeAsyncFlowOption.Enabled);

        var committableTransaction = new CommittableTransaction(options);

        Console.WriteLine($"{Transaction.Current != null} inside Method2");

        //holder.Transaction = Transaction.Current;

        holder.Transaction = committableTransaction;

        await Task.Delay(50);

    }

}