public override object ProvideValue(IServiceProvider serviceProvider)
{
var targetProvider = (IProvideValueTarget)serviceProvider.GetService(typeof(IProvideValueTarget));
var element = (FrameworkElement)targetProvider.TargetObject;
var property = (DependencyProperty)targetProvider.TargetProperty;
element.SetBinding(property, new Binding("Ignored")
{
Source = new IgnoringViewModel(), NotifyOnSourceUpdated = true
});
Binding.AddSourceUpdatedHandler(element, Invoke(element));
return(null);
}
private static void SourceUpdatedCommand_PropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue != null)
{
if (e.OldValue == null)
{
Binding.AddSourceUpdatedHandler(d, DependencyProperty_SourceUpdated);
}
else
{
Binding.RemoveSourceUpdatedHandler(d, DependencyProperty_SourceUpdated);
}
}
}
protected override void OnAttached()
{
if (PropertyName == null)
{
throw new ArgumentException($"The PropertyName property must be set on behavior '{GetType().FullName}'.");
}
dependencyProperty = AssociatedObject.GetDependencyProperties(true).FirstOrDefault(dp => dp.Name == PropertyName);
if (dependencyProperty == null)
{
throw new ArgumentException($"Unable to find property '{PropertyName}' on object of type '{AssociatedObject.GetType().FullName}'.");
}
propertyWatcher.Attach(AssociatedObject);
// TODO: Register/Unregister handlers when the PropertyName changes
propertyWatcher.RegisterValueChangedHandler(dependencyProperty, OnPropertyChanged);
Binding.AddSourceUpdatedHandler(AssociatedObject, OnSourceUpdated);
}
public UC_CaseStudy()
{
InitializeComponent();
int columnsCount = this.gridStreamIn.Columns.Count;
gridStreamIn.Columns[columnsCount - 5].Width = new DataGridLength(1, DataGridLengthUnitType.Star);
columnsCount = this.gridStreamOut.Columns.Count;
gridStreamOut.Columns[columnsCount - 5].Width = new DataGridLength(1, DataGridLengthUnitType.Star);
columnsCount = this.gridHeatIn.Columns.Count;
gridHeatIn.Columns[columnsCount - 4].Width = new DataGridLength(1, DataGridLengthUnitType.Star);
columnsCount = this.gridHeatOut.Columns.Count;
gridHeatOut.Columns[columnsCount - 4].Width = new DataGridLength(1, DataGridLengthUnitType.Star);
Binding.AddSourceUpdatedHandler(gridStreamIn, OnDataGridSourceUpdated);
}
private void DataBindingModeWindow_Loaded(object sender, RoutedEventArgs e)
{
Binding.AddSourceUpdatedHandler(TBoxResult, new EventHandler <DataTransferEventArgs>((sender1, e1) => { /*更新数据源被触发*/ }));
Binding.AddTargetUpdatedHandler(TBoxResult, new EventHandler <DataTransferEventArgs>((sender1, e1) => { /*更新控件数据被触发*/ }));
}
