When you have a lot of process to do in your C# app, but if you do it sequentially it’s take so long. So, you can do it concurrency, this is all you have to see.
TLDR;
let’s me show the code first!
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
namespace ConsoleApp
{
class Program
{
static async Task Main(string[] args)
{
var tasks = new List<Task>();
for (int i = 1; i <= 100; i++)
{
int taskNumber = i;
tasks.Add(Task.Run(() => DoWorkA(taskNumber)));
}
tasks.Add(Task.Run(() => DoWorkB()));
tasks.Add(Task.Run(() => DoWorkC()));
await Task.WhenAll(tasks);
Console.WriteLine("All tasks complete!");
// Do another work here!
Console.ReadKey();
}
private static void DoWorkC()
{
Thread.Sleep(100);
Console.WriteLine("Task C Complete");
}
private static void DoWorkB()
{
Thread.Sleep(500);
Console.WriteLine("Task B Complete");
}
private static void DoWorkA(int taskNumber)
{
Thread.Sleep(1000);
Console.WriteLine($"Task A-{taskNumber} Complete");
}
}
}
Let’s me explain, First assume you have 3 tasks to do and you want to do it concurrency, So i create a list to store all tasks.
var tasks = new List<Task>();
for (int i = 1; i <= 10; i++)
{
int taskNumber = i;
tasks.Add(Task.Run(() => DoWorkA(taskNumber)));
}
tasks.Add(Task.Run(() => DoWorkB()));
tasks.Add(Task.Run(() => DoWorkC()));
In DoWorkA() wrap with loop to do run 10 times with difference arguments and then DoWorkB() and DoWorkC() so when a task added to List<Task>() task already run.
To capture to all the tasks are complete is await Task.WhenAll(tasks); then after all task done you can go with synchronous code after that.
See result
