cookie clicker store

public class MyGameData
{
    public event EventHandler<double> CookiesChanged;

    private double _cookies;

    public double Cookies
    {
        get => _cookies;
        set
        {
            _cookies = value;
            // You can also check if value and cookies are different here to prevent CookiesChanged from updating even if it's the same value.
            CookiesChanged?.Invoke(value);
        }
    }
}

public class MyGameData
{
    public event EventHandler<double> CookiesChanged;

    private double _cookies;

    public double Cookies
    {
        get => _cookies;
        set
        {
            _cookies = value;
            // You can also check if value and cookies are different here to prevent CookiesChanged from updating even if it's the same value.
            CookiesChanged?.Invoke(value);
        }
    }
}

public class MyGameData
{
    public static double MyCookies { get; set; }
}

public class MyGameData
{
    public static double MyCookies { get; set; }
}

MyClassName myName = new MyClassName();
myName.MyCookies += 1;

MyClassName myName = new MyClassName();
myName.MyCookies += 1;

private static double MyCookies
{
  get;
  set;
}

private static double MyCookies
{
  get;
  set;
}

public class MyCookieData
{
  public static double MyCookies {get; set;}
}

public class MyCookieData
{
  public static double MyCookies {get; set;}
}

 private void ResizeCookie(double factorVergroting)
 {
     //berekend de nieuwe grote
     double newWidth = originalWidth * factorVergroting;
     double newHeight = originalHeight * factorVergroting;

     //past de nieuwe groote toe
     ImageBtnCookie.Width = newWidth;
     ImageBtnCookie.Height = newHeight;
 }


 private void ImageBtnCookie_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
 {
     isMouseDown = true;
     
     ResizeCookie(0.9);
 }

 private void ResizeCookie(double factorVergroting)
 {
     //berekend de nieuwe grote
     double newWidth = originalWidth * factorVergroting;
     double newHeight = originalHeight * factorVergroting;

     //past de nieuwe groote toe
     ImageBtnCookie.Width = newWidth;
     ImageBtnCookie.Height = newHeight;
 }


 private void ImageBtnCookie_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
 {
     isMouseDown = true;
     
     ResizeCookie(0.9);
 }

else if (welkeKnop.Name.Substring(welkeKnop.Name.Length - 2)

else if (welkeKnop.Name.Substring(welkeKnop.Name.Length - 2)

return double.Parse(nummerDeel);

return double.Parse(nummerDeel);

Regex.Match(text, @"\d+")

Regex.Match(text, @"\d+")