C#•7mo ago

✅ Need help making classes

My current classes don't work, compilation error CS0115 for no reason, i'm crying here.

namespace BeatBooth.Classes.Pages
{
    public abstract class EnginePage : Page
    {
        public abstract void open();
        public abstract void close();
        public static EnginePage currentPage { get; private set; }

        public static void SwitchPage<T>() where T : EnginePage, new()
        {
            if (currentPage != null)
            {
                currentPage.close();
            }

            var newPage = new T();
            currentPage = newPage;

            GameWindow.Viewport.Content = newPage;
            newPage.open();
        }
    }
}

namespace BeatBooth.Classes.Pages
{
    public abstract class EnginePage : Page
    {
        public abstract void open();
        public abstract void close();
        public static EnginePage currentPage { get; private set; }

        public static void SwitchPage<T>() where T : EnginePage, new()
        {
            if (currentPage != null)
            {
                currentPage.close();
            }

            var newPage = new T();
            currentPage = newPage;

            GameWindow.Viewport.Content = newPage;
            newPage.open();
        }
    }
}

namespace BeatBooth.Classes.Pages
{
    public partial class GameMainMenu : EnginePage
    {
        public GameMainMenu()
        {
            InitializeComponent();
        }

        public override void open()
        {
            Console.WriteLine("Open");
        }

        public override void close()
        {
            Console.WriteLine("Close");
        }
    }
}

namespace BeatBooth.Classes.Pages
{
    public partial class GameMainMenu : EnginePage
    {
        public GameMainMenu()
        {
            InitializeComponent();
        }

        public override void open()
        {
            Console.WriteLine("Open");
        }

        public override void close()
        {
            Console.WriteLine("Close");
        }
    }
}

24 Replies

Broken ToasterOP•7mo ago

oh and code CS0263

Pobiega•7mo ago

Most people dont memorize the error codes, and even if we look them up they dont contain type names and other details that might be valuable. Can you screenshot or copy the error log?

SleepWellPupper•7mo ago

Are you using WPF?

Broken ToasterOP•7mo ago

yes My log is in czech but it says: partial class GameMainMenu can't define different basic classes couldn't find fittable method to override [ open(); close() ]

Broken ToasterOP•7mo ago

The namespace copys the file structure

Broken ToasterOP•7mo ago

Making EnginePage an interface doesn't work... idk what else to do.

The Fog from Human Resources•7mo ago

Show error.

Broken ToasterOP•7mo ago

. I feel like i might be doing this all wrong or idk

The Fog from Human Resources•7mo ago

I mean the compilation error

SleepWellPupper•7mo ago

https://learn.microsoft.com/en-us/dotnet/desktop/wpf/xaml/?view=netdesktop-8.0#events-and-xaml-code-behind You are using a different base class from the c# class that WPF generates for your xaml definition

XAML overview - WPF .NET

Learn how the XAML language is structured and implemented by Windows Presentation Foundation (WPF) for .NET.

SleepWellPupper•7mo ago

Since WPF generates a partial MainMenuPage you get the conflicting partial declarations with different base classes Subsequently the compiler is confused and does not recognize your override methods anymore, since it's trying to resolve them via the base class defined in the WPF-generated partial MainMenuPage

SleepWellPupper•7mo ago

https://stackoverflow.com/a/1298414

Stack Overflow

How do you specify a different base class in .xaml files (Silverlig...

How can you specify a common base class in .xaml files for seperate Silverlight Page classes? I have a few common properties that I would like to share across pages, but I don't know how to do this

SleepWellPupper•7mo ago

This might help you define the base class in XAML and avoid the partial class conflicts

Broken ToasterOP•7mo ago

To explain what i'm tryna do - I have a window in which i'll have a game. In this window theres a <Frame/> and i want my own Page class, lets say EnginePage, that inherits from Page cuz it's it's extention. From EnginePage all the other pages inherit. There won't be a EnginePage object, so it's abstract. I want to control the change of pages more "strongly", so a static SwitchPage<T>() function is implemented. I want to allow the pages to have functions that activate when opened and closed, so public abstract void Open() and Close() oh my god

SleepWellPupper•7mo ago

Can you share the xaml of your MainMenuPage?

Broken ToasterOP•7mo ago

I've tried so many things from now, i believe... yup, i deleted the files to start fresh cuz the code is already scatered acros multiple discord convos and ChatGPT chats... here, top message but i'll propably just do a custom XML element with UserControl

SleepWellPupper•7mo ago

I meant the actual GameMainMenu.xaml file

Broken ToasterOP•7mo ago

oh... i mean i didn't change anything... except namespaces and class name when renaming stuff but i checked multiple times that it was correct.

SleepWellPupper•7mo ago

If you share your xaml code I can help you figure out how to change it to define the base class used in the WPF-generated c# code

Broken ToasterOP•7mo ago

namespace BeatBooth.pages
{
    /// <summary>
    /// Interakční logika pro EnginePage.xaml
    /// </summary>
    public class EnginePage : UserControl
    {
        int number = 8;
    }
}

namespace BeatBooth.pages
{
    /// <summary>
    /// Interakční logika pro EnginePage.xaml
    /// </summary>
    public class EnginePage : UserControl
    {
        int number = 8;
    }
}

<local:EnginePage 
    x:Class="BeatBooth.pages.GameMainMenu"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
    xmlns:local="clr-namespace:BeatBooth.pages"
    mc:Ignorable="d" 
    d:DesignHeight="450" d:DesignWidth="800"/>

<local:EnginePage 
    x:Class="BeatBooth.pages.GameMainMenu"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
    xmlns:local="clr-namespace:BeatBooth.pages"
    mc:Ignorable="d" 
    d:DesignHeight="450" d:DesignWidth="800"/>

namespace BeatBooth.pages
{
    /// <summary>
    /// Interakční logika pro GameMainMenu.xaml
    /// </summary>
    public partial class GameMainMenu : EnginePage
    {
        public GameMainMenu()
        {
            InitializeComponent();
        }
    }
}

namespace BeatBooth.pages
{
    /// <summary>
    /// Interakční logika pro GameMainMenu.xaml
    /// </summary>
    public partial class GameMainMenu : EnginePage
    {
        public GameMainMenu()
        {
            InitializeComponent();
        }
    }
}

ERROR: Name EnginePage doesn't exist in clr-namespace:BeatBooth.pages - XDG0008 EnginePage doesn't have xml, i assumed from the StackOverflow that it didn't need one.

SleepWellPupper•7mo ago

I'm assuming the xaml code is from the GameMainMenu.xaml file? If so, change xmlns:local="clr-namespace:BeatBooth.pages" xmlns:local="clr-namespace:BeatBooth.Classes.Pages" Otherwise, it's attempting to localize your EnginePage class in the BeatBooth.pages namespace where of course it doesn't exist.

Broken ToasterOP•7mo ago

I figured it all out Thx for the help

SleepWellPupper•7mo ago

$close

MODiX•7mo ago

If you have no further questions, please use /close to mark the forum thread as answered

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✅ Need help making classes