GenerationEntry.cs

public class GenerationEntry : INotifyPropertyChanged
{
	private int quantity;
	private int size;
	private Level level;

	public event PropertyChangedEventHandler PropertyChanged;

	public GenerationEntry()
	{
		this.Quantity = 1;
		this.Size = 8;
		this.Level = Level.One;
	}

	public int Quantity
	{
		get
		{
			return this.quantity;
		}
		set
		{
			if (value != this.quantity)
			{
				Debug.Assert(value > 0);
				this.quantity = value;
				NotifyPropertyChanged();
			}
		}
	}

	public int Size
	{
		get
		{
			return this.size;
		}
		set
		{
			if (value != this.size)
			{
				Debug.Assert((value >= 4) && (value % 2 == 0));
				this.size = value;
				NotifyPropertyChanged();
			}
		}
	}

	public Level Level
	{
		get
		{
			return this.level;
		}
		set
		{
			if (value != this.level)
			{
				this.level = value;
				NotifyPropertyChanged();
			}
		}
	}

	public override string ToString()
	{
		return String.Format("{0} puzzles {1}x{1} de niveau {2}", this.quantity, this.size, (int)this.level);
	}

	private void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
	{
		if (PropertyChanged != null)
		{
			PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
		}
	}
}

gistfile1.txt

System.ArgumentException: Cannot bind to the property or column Quantity on the DataSource.
Parameter name: dataMember
   at System.Windows.Forms.BindToObject.CheckBinding()
   at System.Windows.Forms.BindToObject.SetBindingManagerBase(BindingManagerBase lManager)
   at System.Windows.Forms.Binding.SetListManager(BindingManagerBase bindingManagerBase)
   at System.Windows.Forms.ListManagerBindingsCollection.AddCore(Binding dataBinding)
   at System.Windows.Forms.BindingsCollection.Add(Binding binding)
   at System.Windows.Forms.BindingContext.UpdateBinding(BindingContext newBindingContext, Binding binding)
   at System.Windows.Forms.Control.UpdateBindings()
   at System.Windows.Forms.Control.OnBindingContextChanged(EventArgs e)
   at System.Windows.Forms.Control.OnParentBindingContextChanged(EventArgs e)
   at System.Windows.Forms.Control.OnBindingContextChanged(EventArgs e)
   at System.Windows.Forms.Control.OnParentBindingContextChanged(EventArgs e)
   at System.Windows.Forms.Control.OnBindingContextChanged(EventArgs e)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.OnVisibleChanged(EventArgs e)
   at System.Windows.Forms.ScrollableControl.OnVisibleChanged(EventArgs e)
   at System.Windows.Forms.Control.OnParentVisibleChanged(EventArgs e)
   at System.Windows.Forms.Control.OnVisibleChanged(EventArgs e)
   at System.Windows.Forms.ScrollableControl.OnVisibleChanged(EventArgs e)
   at System.Windows.Forms.Form.OnVisibleChanged(EventArgs e)
   at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
   at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
   at System.Windows.Forms.Control.set_Visible(Boolean value)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at Takuzu.Generator.Program.Main() in c:\Users\David\Documents\GitHub\Takuzu\Takuzu.Generator\Program.cs:line 19
   at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

MainForm.cs

public partial class MainForm : Form
{
	private BindingList<GenerationEntry> generationList = new BindingList<GenerationEntry>();
 
	public MainForm()
	{
		InitializeComponent();
 
		this.listBoxGeneration.DataSource = this.generationList;
 
  		this.numericUpDownGenerationCount.DataBindings.Add(
			"Value",
			this.listBoxGeneration,
			"SelectedValue.Quantity",
			false,
			DataSourceUpdateMode.OnPropertyChanged);
	}
 
	private void buttonGenerationAdd_Click(object sender, EventArgs e)
	{
		this.generationList.Add(new GenerationEntry());
	}
 
	private void buttonGenerationRemove_Click(object sender, EventArgs e)
	{
		this.generationList.RemoveAt(this.listBoxGeneration.SelectedIndex);
	}
}