It turns out that there’s a very elegant solution to this, but it’s not well documented. Formatting model values for display can be handled by the | operator and an angular formatter. It turns out that the ngModel that has not only a list of formatters but also a list of parsers. 1. Use ng-model … Read more
You can use binding expressions: private void ComboBox_Loaded(object sender, RoutedEventArgs e) { ((ComboBox)sender).GetBindingExpression(ComboBox.ItemsSourceProperty) .UpdateTarget(); } But as Blindmeis noted you can also fire change notifications, further if your collection implements INotifyCollectionChanged (for example implemented in the ObservableCollection<T>) it will synchronize so you do not need to do any of this.
Here’s a workaround for Binding Columns in the DataGrid. Since the Columns property is ReadOnly, like everyone noticed, I made an Attached Property called BindableColumns which updates the Columns in the DataGrid everytime the collection changes through the CollectionChanged event. If we have this Collection of DataGridColumn’s public ObservableCollection<DataGridColumn> ColumnCollection { get; private set; } … Read more
Yes, I’ve done this in the past with the ActualWidth and ActualHeight properties, both of which are read-only. I created an attached behavior that has ObservedWidth and ObservedHeight attached properties. It also has an Observe property that is used to do the initial hook-up. Usage looks like this: <UserControl … SizeObserver.Observe=”True” SizeObserver.ObservedWidth=”{Binding Width, Mode=OneWayToSource}” SizeObserver.ObservedHeight=”{Binding … Read more
concate it with grave accent (`) android:text=”@{`Hello ` + user.firstName}”/> You can concat it in multiple ways, check it here concat-two-strings-in-textview-using-databinding
It looks strange, but it works. We do it in about 20 different places in our app. Hyperlink implicitly constructs a <Run/> if you put text in its “content”, but in .NET 3.5 <Run/> won’t let you bind to it, so you’ve got to explicitly use a TextBlock. <TextBlock> <Hyperlink Command=”local:MyCommands.ViewDetails” CommandParameter=”{Binding}”> <TextBlock Text=”{Binding Path=Name}”/> … Read more
I used this method by Gareth Evans in my Silverlight project. Here’s my implementation of it: public class ValueConverterGroup : List<IValueConverter>, IValueConverter { #region IValueConverter Members public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { return this.Aggregate(value, (current, converter) => converter.Convert(current, targetType, parameter, culture)); } public object ConvertBack(object value, Type targetType, object parameter, … Read more
I did not get any satisfying answers. So here are the tips which are summary of my data binding knowledge. Tips For Solving DataBinding Issues Update To get more accurate errors and suggestions, I strongly recommend to update Android Studio and Gradle plugin version to the latest. Because I am not facing many issues after … Read more
With all these drawbacks, why using Converters ? Am I missing something ? Are there other tricks that I am not aware of ? No, I think you have very comprehensively described both PropertyEditor and Converter, how each one is declared and registered. In my mind, PropertyEditors are limited in scope – they help convert … Read more
Assuming AdvancedFormat is a bool, you need to declare and use a BooleanToVisibilityConverter: <!– In your resources section of the XAML –> <BooleanToVisibilityConverter x:Key=”BoolToVis” /> <!– In your Button declaration –> <Button Height=”50″ Width=”50″ Style=”{StaticResource MyButtonStyle}” Command=”{Binding SmallDisp}” CommandParameter=”{Binding}” Cursor=”Hand” Visibility=”{Binding Path=AdvancedFormat, Converter={StaticResource BoolToVis}}”/> Note the added Converter={StaticResource BoolToVis}. This is a very common pattern … Read more