Winforms Usercontrol Databinding question

Member_15011965

I have a databinding issue with a numericupdown control bound to a bindinglist of objects. The updown control is located on a usercontrol. The controls can be loaded with values from a file located in a defaults xml file. The databinding works as it should upon loading the defaults file the first time. If during the session, I want to reload the defaults the databinding is lost. I can see that the values are loaded in correctly, but the numericupdn doesn't change value. here's a simplified version of my code to help explain. Object class:

public class Garage :
{

public BindingList Drawer = new BindingList
{
new DrawerData(),
new DrawerData()

};

}

public class DrawerData : INotifyPropertyChanged
{
private decimal _NumberOfTools;
public event PropertyChangedEventHandler PropertyChanged;

public decimal NumberOfTools
	{
		get { return \_NumberOfTools; }
		set {
			if (\_NumberOfTools != value)
			{
				\_NumberOfTools = value;

				OnPropertyChanged("NumberOfTools");
			}
		}
	}

public event PropertyChangedEventHandler PropertyChanged;
	public void OnPropertyChanged(\[CallerMemberName\] string PropertyName = "")
	{
		
		PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(PropertyName));
		
	}

}

Usercontrol class:

public partial class UcDrawer : UserControl, INotifyPropertyChanged
{

private readonly Garage \_Garage;
private readonly int Drw
BindingSource bindingSource = new BindingSource();

public event PropertyChangedEventHandler PropertyChanged;

public UcDrawer(int drw,Garage garage)
	{
		\_Garage = garage;
		Drw = drw;

		bindingSource.DataSource = \_Garage.Drawer\[Drw\];
		
	}

private void UcDrawer\_Load(object sender, EventArgs e)
	{
		UpDnSettingsNumberOfTools.DataBindings.Add(new Binding("Value", bindingSource, "NumberOfTools", true, DataSourceUpdateMode.OnPropertyChanged));
		
	}

}

Form where usercontrol is used (it's loaded into tabpages in a tabcontrolon the form):

public partial class FrmGarage : Form
{
private readonly int Drw;
private readonly Garage _Garage;

	public FrmGarage(int drw, Garage garage )
	{
		InitializeComponent();
		Drw = drw;
		\_Garage = garage;
	}

	private void FrmGarage\_Load(object sender, EventArgs e)
	{
		for (int i = 0; i < ch; i++)
		{
			AddTab(i + 1);
		}
	}

	private void AddTab(int ChNum)
	{
		UcDrawer ucDrawer = new UcD

Lost User

Didn't see anything in there that looked like a "numeric up/down control".

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it. ― Confucian Analects: Rules of Confucius about his food

Member_15011965

It's in the UcDrawer class. The usercontrol layout was made in the design view. It is the UpDnSettingsNumberOfTools control located in this line:

UpDnSettingsNumberOfTools.DataBindings.Add(new Binding("Value", bindingSource, "NumberOfTools", true, DataSourceUpdateMode.OnPropertyChanged));

Lost User

Just a guess, since Windows Forms seem to be morphing into WPF ... Changing / selecting tabs fires its own loaded and unloaded events (in WPF) and it looks like your UpDown is on a tab.

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it. ― Confucian Analects: Rules of Confucius about his food