Any ideas on how to implement a method that given a propertyname, finds a control (perhaps from a visualtree) which is bound to the given property?
I created code based on accepted ASanch answer. This code uses LogicalTreeHelper which makes it 6times faster (130ms vs 20ms when looking for control with specific binding on simple window).
Plus I fix some errors in ASanch code (look at original "else if (bindingBase is MultiBinding)" or "else if (bindingBase is PriorityBinding)").
public static class DependencyObjectHelper
{
///
/// Gets all dependency objects which has binding to specific property
///
///
///
///
public static IList GetDependencyObjectsWithBindingToProperty(DependencyObject dependencyObject, string propertyName)
{
var list = new List();
GetDependencyObjectsWithBindingToPropertyRecursive(propertyName, dependencyObject, list);
return list;
}
///
///
///
///
///
///
///
/// Based on ASanch answer on http://stackoverflow.com/questions/3959421/wpf-find-control-that-binds-to-specific-property
/// >
private static void GetDependencyObjectsWithBindingToPropertyRecursive(string propertyName, DependencyObject dependencyObject, ICollection sources)
{
var dependencyProperties = new List();
dependencyProperties.AddRange(MarkupWriter.GetMarkupObjectFor(dependencyObject).Properties.Where(x => x.DependencyProperty != null).Select(x => x.DependencyProperty).ToList());
dependencyProperties.AddRange(
MarkupWriter.GetMarkupObjectFor(dependencyObject).Properties.Where(x => x.IsAttached && x.DependencyProperty != null).Select(x => x.DependencyProperty).ToList());
var bindings = dependencyProperties.Select(x => BindingOperations.GetBindingBase(dependencyObject, x)).Where(x => x != null).ToList();
Predicate condition = binding => binding != null && binding.Path.Path == propertyName && !sources.Contains(dependencyObject);
foreach (var bindingBase in bindings)
{
if (bindingBase is Binding)
{
if (condition(bindingBase as Binding))
sources.Add(dependencyObject);
}
else if (bindingBase is MultiBinding)
{
if (((MultiBinding)bindingBase).Bindings.Any(bindingBase2 => condition(bindingBase2 as Binding)))
{
sources.Add(dependencyObject);
}
}
else if (bindingBase is PriorityBinding)
{
if (((PriorityBinding)bindingBase).Bindings.Any(bindingBase2 => condition(bindingBase2 as Binding)))
{
sources.Add(dependencyObject);
}
}
}
var children = LogicalTreeHelper.GetChildren(dependencyObject).OfType().ToList();
if (children.Count == 0)
return;
foreach(var child in children)
{
GetDependencyObjectsWithBindingToPropertyRecursive(propertyName, child, sources);
}
}
}