MVVM

Why does the CheckBox state change in WPF DataGridCheckBoxColumn not automatically update the bound property? Situation： My code has correctly implemented the binding relationship using the MVVM library, but I am unable to filter data using the checkbox in the DataGrid. //model public class SpectralPeakDataItem { public bool IsUserFor { get; set; } public double Wavelength { get; set; } public int PixelPosition { get; set; } public double InstensityPercentage { get; set; } } //ViewModel [ObservableProperty] private ObservableCollection<SpectralPeakDataItem> _mercuryArgonSpectralPeakDataItems = []; <ui:DataGrid Grid.Column="0" Margin="5" AutoGenerateColumns="False" ItemsSource="{Binding MercuryArgonSpectralPeakDataItems, Mode=TwoWay}"> <DataGrid.Columns> <DataGridCheckBoxColumn Binding="{Binding IsUserFor, Mode=TwoWay}" Header="IsUserFor" /> <DataGridTextColumn Binding="{Binding Wavelength, Mode=TwoWay}" Header="Wavelength" /> <DataGridTextColumn Binding="{Binding PixelPosition, Mode=TwoWay}" Header="PixelPosition" /> <DataGridTextColumn Binding="{Binding InstensityPercentage, Mode=TwoWay}" Header="Percentage" /> </DataGrid.Columns> </ui:DataGrid> However, in the usual event-driven code design, it works fine.So, I think this is an issue with MVVM’s data binding, as it doesn’t seem to achieve data synchronization.So next, I discovered that:In a WPF DataGridCheckBoxColumn, the reason why changes in the CheckBox’s checked state do not automatically trigger property updates is primarily because the DataGridCheckBoxColumn uses a binding context that may not directly reflect changes in the CheckBox state. This often involves the following issues: ...