Can't specify the 'async' modifier on the 'Main' method of a console app

Question

I am new to asynchronous programming with the async modifier. I am trying to figure out how to make sure that my Main method of a console applicati

Answer 1

C# 7.1 (using vs 2017 update 3) introduces async main

You can write:

   static async Task Main(string[] args)
  {
    await ...
  }

For more details C# 7 Series, Part 2: Async Main

Update:

You may get a compilation error:

Program does not contain a static 'Main' method suitable for an entry point

This error is due to that vs2017.3 is configured by default as c#7.0 not c#7.1.

You should explicitly modify the setting of your project to set c#7.1 features.

You can set c#7.1 by two methods:

Method 1: Using the project settings window:

• Open the settings of your project
• Select the Build tab
• Click the Advanced button
• Select the version you want As shown in the following figure:

Method2: Modify PropertyGroup of .csproj manually

Add this property:

    7.1

example:

    
        AnyCPU
        true
        full
        false
        bin\Debug\
        DEBUG;TRACE
        prompt
        4
        false
        7.1