How to put a task to sleep (or delay) in C# 4.0?
You can use a Timer to create a Delay method in 4.0:
public static Task Delay(double milliseconds){ var tcs = new TaskCompletionSource<bool>(); System.Timers.Timer timer = new System.Timers.Timer(); timer.Elapsed+=(obj, args) => { tcs.TrySetResult(true); }; timer.Interval = milliseconds; timer.AutoReset = false; timer.Start(); return tcs.Task;}
using System;using System.Threading;using System.Threading.Tasks;class Program{ static void Main() { Delay(2000).ContinueWith(_ => Console.WriteLine("Done")); Console.Read(); } static Task Delay(int milliseconds) { var tcs = new TaskCompletionSource<object>(); new Timer(_ => tcs.SetResult(null)).Change(milliseconds, -1); return tcs.Task; }}From the section How to implement Task.Delay in 4.0