How can I call an async method in Main?
async-await, asynchronous, c#, task
Solution
Your `Main` method can be simplified. For C# 7.1 and newer:
static async Task Main(string[] args)
{
test t = new test();
await t.Go();
Console.WriteLine("finished");
Console.ReadKey();
}
For earlier versions of C#:
static void Main(string[] args)
{
test t = new test();
t.Go().Wait();
Console.WriteLine("finished");
Console.ReadKey();
}
This is part of the beauty of the `async` keyword (and related functionality): the use and confusing nature of callbacks is greatly reduced or eliminated.
Problem
``` public class test { public async Task Go() { await PrintAnswerToLife(); Console.WriteLine("done"); } public async Task PrintAnswerToLife() { int answer = await GetAnswerToLife(); Console.WriteLine(answer); } public async Task<int> GetAnswerToLife() { await Task.Delay(5000); int answer = 21 * 2; return answer; } } ``` if I want to call Go in main() method, how can I do that? I am trying out c# new features, I know i can hook the async method to a event and by triggering that event, async method can be called. But what if I want to call it directly in main method? How can i do that? I did something like ``` class Program { static void Main(string[] args) { test t = new test(); t.Go().GetAwaiter().OnCompleted(() => { Console.WriteLine("finished"); }); Console.ReadKey(); } } ``` But seems it's a dead lock and nothing is printed on the screen.