How Do I Properly Invoke Async Methods from the Main Method in C#?

Invoking Async Methods in Main: A Comprehensive Guide

In the realm of asynchronous programming, it's not uncommon to encounter situations where we need to call an async method directly from the Main method. Understanding how this can be achieved is crucial for leveraging the benefits of asynchronous programming.

Asynchronous Method Invocation in Main

Consider the following code snippet:

<br>public class test<br>{</p>
<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">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;
}

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}

Multiple Approaches

There are several approaches to invoking async methods from the Main method:

1. Async Main Method (C# 7.1 and Newer)

For C# 7.1 and newer versions, the Main method can be marked as async. This enables the direct use of async methods within the Main method, as seen in the following example:

<br>static async Task Main(string[] args)<br>{</p>
<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">test t = new test();
await t.Go();
Console.WriteLine("finished");
Console.ReadKey();

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