C#•14mo ago

❔ Choosing correct Console App project.

Hey there, it is a year ago since I touched C#, and now I have to work in it again for a school course. In my solution I need to have 2 projects. 1. A project that only contains LOGIC so i choose for this to be a class library project 2. A project that only contains UI related stuff (it just needs to have a Program.cs) so this is just a console app project For the UI project I chose the Console App .NET Framework variant, but when I want to add a reference in our UI project to the LOGIC project, I get this error:

Severity    Code    Description    Project    File    Line    Suppression State
Warning        Project '..\X.LOGIC\X.LOGIC.csproj' targets 'net6.0'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.8'.    X.UI

Severity    Code    Description    Project    File    Line    Suppression State
Warning        Project '..\X.LOGIC\X.LOGIC.csproj' targets 'net6.0'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.8'.    X.UI

When I add another project, but this time the regular Console App project, and a reference it simply works. However, this Program.cs has no main method as visible in the picture. Is this normal and should I work with this one?

24 Replies

Thinker•14mo ago

Your issue is that your library targets .NET 6 while your console app targets an outdated version. Your console app should also be targeting .NET 6. not framework

electronic heartbreak.•14mo ago

Thats correct, but I simply cannot select a higher version than 4.8. Let me take a screenshot of it.

Pobiega•14mo ago

you picked the wrong project type when you created it $newproject

MODiX•14mo ago

When creating a new project, prefer using .NET over .NET Framework, unless you have a very specific reason to be using .NET Framework. .NET Framework is now legacy code and only get security fix updates, it no longer gets new features and is not recommended. https://cdn.discordapp.com/attachments/569261465463160900/899381236617855016/unknown.png

Thinker•14mo ago

yeah You should never select anything with .NET Framework in the name

electronic heartbreak.•14mo ago

Thinker•14mo ago

yes

Pobiega•14mo ago

yup, pick the 6.0 one

electronic heartbreak.•14mo ago

Thinker•14mo ago

no not that one The top one

electronic heartbreak.•14mo ago

Yes i know, just wanted to show you haha That one question remains; why it has no Main method?

Thinker•14mo ago

$toplevelcode

Pobiega•14mo ago

"top level statements"

MODiX•14mo ago

Traditionally in C#, the main entry point of any program would be a static Main method (see $mains):

public static class Program
{
    public static void Main()
    {
        Console.WriteLine("Hello, world!");
    } 
}

public static class Program
{
    public static void Main()
    {
        Console.WriteLine("Hello, world!");
    } 
}

In C# 9, a feature called top-level statements was added which allows the static Main method to be omitted in favor of brevity and simplicity, and in C# 10, this was made part of the default console application template:

Console.WriteLine("Hello, world!");

Console.WriteLine("Hello, world!");

If you are following a tutorial or example code and your default template looks different, you can still write the exact same code as if you were writing it inside the static Main method. In addition, you can still write static methods inside top-level code. You can however not use top-level code in more than one file. If you wish to use the old traditional entry point, you can still use a Program class with a static Main method. https://docs.microsoft.com/en-us/dotnet/csharp/fundamentals/program-structure/top-level-statements

Top-level statements - programs without Main methods

Learn about top-level statements in C# 9 and later. You can create programs without the ceremony of a Program class and a Main method.

Thinker•14mo ago

It's just slightly cleaner It makes no practical difference, other than if you really prefer explicitly having the class and method.

electronic heartbreak.•14mo ago

Moment please, let me create the console app project haha The reference works as expected. So when you see the pic, the main method is simply said out of the window

electronic heartbreak.•14mo ago