CODEWITHSUNDEEP
c#function
Shiro
Shiro

Reputation: 21

C# - Expected a method with 'xxx' signature

I have two projects (MenuSystem and GameBrain) in one solution for a board game. Across projects i have enum EMenuNavigation which is placed in MenuSystem and link added to GameBrain.

I have a MenuItem class:

public class MenuItem
{
    private string Title { get; set; }
    public Func<EMenuNavigation>? MethodToRun { get; set; }

    public override string ToString() => Title;

    public MenuItem(string title, Func<EMenuNavigation>? methodToRun)
    {
        Title = title;
        MethodToRun = methodToRun;
    }
}

My function looks like this:

public static EMenuNavigation HvH()
{
    var board = new Board(8);
    var gameMenu = new Menu(EMenuLevel.Game, "> Game <");
    gameMenu.MenuItems.Add(new MenuItem("Make A Move", board.MakeMove));
    gameMenu.MenuItems.Add(new MenuItem("Cheat", null));
    gameMenu.MenuItems.Add(new MenuItem("Save The Game", null));

    board.ShowBoard();
    
    return gameMenu.RunMenu();
}

My problem is here:

new MenuItem("Make A Move", board.MakeMove)

I get "Expected a method with 'EMenuNavigation MakeMove()' signature"

Method in Board class:

public class Board
{

    public EMenuNavigation MakeMove()
    {

        var userMove = GetUserCoords("What do checker you want to move?");

        Console.WriteLine(userMove);
        
        return EMenuNavigation.Stay;
    }
}

Problem: Why is "Expected a method with 'EMenuNavigation MakeMove()' signature" if i already have it in class Board and how i can solve it?

If i change

Func<EMenuNavigation>?

To

Func<int>?

Everything could work, but it will not be easy readable and hard to understand what number what means. If i try to change my

gameMenu.MenuItems.Add(new MenuItem("Make A Move", board.MakeMove));

To

gameMenu.MenuItems.Add(new MenuItem("Make A Move", board.MakeMove()));

I get another error and cannot solve it too.

Upvotes: 1

Views: 425

Answers (1)

Shiro
Shiro

Reputation: 21

Lambda expression solves problem.

gameMenu.MenuItems.Add(new MenuItem("Make A Move", () => board.MakeMove() ));

Upvotes: 1

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