C#•9mo ago

error code CS5001

i have "finished" my code but i have a error "The program does not contain a static 'Main' method suitable for an HLTool entry point"

25 Replies

FestivalDelGelato•9mo ago

are there two mains? is there code before the main? does another file have code before namespace?

! 'HoplanOP•9mo ago

just this one have a little code before namespace

Jimmacle•9mo ago

your program needs a special method called Main in order for it to actually run $main

MODiX•9mo ago

$mains

Jimmacle•9mo ago

$mains

MODiX•9mo ago

The possible signatures for Main are

public static void Main() { }
public static int Main() { }
public static void Main(string[] args) { }
public static int Main(string[] args) { }
public static async Task Main() { }
public static async Task<int> Main() { }
public static async Task Main(string[] args) { }
public static async Task<int> Main(string[] args) { }

public static void Main() { }
public static int Main() { }
public static void Main(string[] args) { }
public static int Main(string[] args) { }
public static async Task Main() { }
public static async Task<int> Main() { }
public static async Task Main(string[] args) { }
public static async Task<int> Main(string[] args) { }

public is not required (can be any accessibility). Top-level statements are compiled into a Main method and will use an appropriate signature depending on the body. https://docs.microsoft.com/en-US/dotnet/csharp/fundamentals/program-structure/main-command-line

Main() and command-line arguments - C#

Learn about Main() and command-line arguments. The 'Main' method is the entry point of an executable program.

Jimmacle•9mo ago

when your program starts this method gets called, then you write the code you want to run inside main another option is $toplevelcode

MODiX•9mo 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 - C#

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

! 'HoplanOP•9mo ago

oh ok so i just have to delete "Menu" and put "Main" ?

Jimmacle•9mo ago

you don't have to delete anything you have to add an entry point

! 'HoplanOP•9mo ago

Jimmacle•9mo ago

what do you want to happen when you run your program?

! 'HoplanOP•9mo ago

its a dll that i put in my game file and when i press a key its a Menu made with imgui that show

! 'HoplanOP•9mo ago

dunno where i can put it

where.txt

Jimmacle•9mo ago

should've led with that, that changes things in that case you probably don't want a main, you want to build your project as a class library instead of an executable

! 'HoplanOP•9mo ago

yep

Jimmacle•9mo ago

https://stackoverflow.com/questions/74823716/what-are-the-different-project-output-types-used-for

! 'HoplanOP•9mo ago

its already with the project output "class library"

Jimmacle•9mo ago

not if it's complaining about no main method

! 'HoplanOP•9mo ago

type de sortie = output , bibliothèque de classes = class library

Jimmacle•9mo ago

have you saved/reloaded VS?

! 'HoplanOP•9mo ago

yep

Jimmacle•9mo ago

then something is broken

! 'HoplanOP•9mo ago

uh wtf i think i succeeded to remove the error

Gaming

Programming

error code CS5001

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