[WINUI]Binding not works properly in NumberBox when binded a Nullable float property

[sethuramkumar]

Describe the bug

Binding not works properly in NumberBox when binded a Nullable float property

**MainWindow.xaml**
<StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
<TextBlock Text="Binded with Double Nullable Property" FontWeight="Medium"/>
    <NumberBox Width="200" Height="30" Value="{Binding Price,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
    <NumberBox Width="200" Height="30" Value="{Binding Price,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
    <TextBlock Text="Binded with Float Nullable Property" FontWeight="Medium"/>
    <NumberBox Width="200" Height="30" Value="{Binding Rate,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
    <NumberBox Width="200" Height="30" Value="{Binding Rate,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
    <StackPanel.DataContext>
        <local:ViewModel/>
    </StackPanel.DataContext>
</StackPanel>

**ViewModel**
 public class ViewModel : INotifyPropertyChanged
 {
     private double? _price;
     public double? Price { get { return _price; } set { _price = value; RaisePropertyChanged("Price"); } }

     private float? _rate;
     public float? Rate { get { return _rate; } set { _rate = value; RaisePropertyChanged("Rate"); } }
     public ViewModel() { }

     public event PropertyChangedEventHandler PropertyChanged;

     public void RaisePropertyChanged(string propertyName) 
     {
         PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
     }
 }

Steps to reproduce the bug

1.Declare a Numberbox and bind a value property of NumberBox to a Nullable float property.
2.Declare another Numberbox and bind a value property of NumberBox to the same Nullable float property.
3.Edit the value in the first Number Box.

Observed Behavior:
Value is not updated based on binding.
Note: For Nullable double property it works properly.

Expected behavior

Edited value should be reflected in both the number box because of binding.

Screenshots

NumberBoxDemo.mp4

NuGet package version

WinUI 3 - Windows App SDK 1.4.0: 1.4.230822000

Windows version

Windows 11 (21H2): Build 22000

Additional context

No response

[Santhoshsf3897]

Hi Team,
Is there any update?

[Santhoshsf3897]

is there any update regarding this?

[Maddog2412]

Hi, I have a quite similar problem:
I try to bind the value property of a numberbox to a byte value, which causes an error at binding (when I am getting the actual BindingExpressionValue and try to bindingExpressionValue?.UpdateSource(), it leads me to a DebugSettings.BindingFailed in App.g.i.cs) but everything works fine, when I am binding the numberbox value to an int value.
So for me it seems that, depending on the datatype I am binding to that causes a problem.
So when it is getting fixed, pls check also the binding to other datatypes if they are working well.

[Santhoshsf3897]

is there any update regarding this?