How to delay a certain task in c# .NET core 3.1

Question

NOTE: I am a noob at coding.

I am trying to make a certain task in my application run after a certain amount of time one (for example) I want Console.WriteLine("Hello delay"); to run 180 seconds after Console.WriteLine("Hello World!"); is run, how would I do that?

I have not tried anything else yet.

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");

            // I want (Console.WriteLine("Hello delay");) to run 
            // 180 seconds after (Console.WriteLine("Hello World!");) is run
            Console.WriteLine("Hello delay");
        }
    }
}

Question has already been answered [here](https://stackoverflow.com/questions/20082221/when-to-use-task-delay-when-to-use-thread-sleep) — mr.coffee, Jun 17 '21 at 00:23
Does this answer your question? [How to add a delay for a 2 or 3 seconds](https://stackoverflow.com/questions/5449956/how-to-add-a-delay-for-a-2-or-3-seconds) — bg117, Jun 17 '21 at 02:37

score 3 · Accepted Answer · answered Jun 17 '21 at 00:26

3

you can sleep current thread.

using System;
using System.Threading;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
            Thread.Sleep(180 * 1000);
            Console.WriteLine("Hello delay");
        }
    }
}

answered Jun 17 '21 at 00:26

MrMoeinM

2,080
1
11
16

Thank you very much kind sir, this solved my problem! – user15593957 Jun 17 '21 at 00:41
Note that this is only acceptable in a single-threaded console application. Never sleep thread pool threads. – Kevin Krumwiede Jun 17 '21 at 01:39

score 2 · Answer 2 · answered Jun 17 '21 at 00:29

Use Task.Run() to run a task and wait for its completion.

static void Main(string[] args)
{
    Console.WriteLine("Hello World!");

    var numSecondsDelay = 180;

    var t = Task.Run(async delegate
    {
        await Task.Delay(numSecondsDelay*1000);
        return numSecondsDelay;
    });
    t.Wait();

    Console.WriteLine("Hello delay");
}

Ajeet Kumar · Answer 3 · 2021-06-17T01:26:47.580

1

using System;
using System.Threading; // add this
namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
            Thread.Sleep(180000); // add this
            Console.WriteLine("Hello delay");
        }
    }
}

edited Jun 17 '21 at 01:26

answered Jun 17 '21 at 00:32

Ajeet Kumar

687
6
12

score 0 · Answer 4 · answered Jun 17 '21 at 00:27

0

like this:

static async void Main(string[] args)
{
    Console.WriteLine("Hello World!");
    
    await Task.Run(() =>
        {
            Thread.Sleep(1000);
            Console.WriteLine("Hello delay");
        });
        
    Console.WriteLine("Hello delay");
}

answered Jun 17 '21 at 00:27

CorrieJanse

2,374
1
6
23

1

`Task.Run` runs the function on the thread pool and you should _never_ sleep on a thread pool thread. – Etienne de Martel Jun 17 '21 at 01:45

score 0 · Answer 5 · edited Jun 17 '21 at 03:01

0

You can use the following code to delay processing for 180 seconds.

System.Threading.Thread.Sleep(180 * 1000);

edited Jun 17 '21 at 03:01

TidyDev

3,470
9
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answered Jun 17 '21 at 02:38

bg117

354
4
13

How to delay a certain task in c# .NET core 3.1

5 Answers5