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public class FindControl
{
public static T FindChild<T>(DependencyObject parent, string childName)
where T : DependencyObject
{
// Confirm parent and childName are valid.
if (parent == null) return null;
T foundChild = null;
int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < childrenCount; i++)
{
var child = VisualTreeHelper.GetChild(parent, i);
// If the child is not of the request child type child
T childType = child as T;
if (childType == null)
{
// recursively drill down the tree
foundChild = FindChild<T>(child, childName);
// If the child is found, break so we do not overwrite the found child.
if (foundChild != null) break;
}
else if (!string.IsNullOrEmpty(childName))
{
var frameworkElement = child as FrameworkElement;
// If the child's name is set for search
if (frameworkElement != null && frameworkElement.Name == childName)
{
// if the child's name is of the request name
foundChild = (T)child;
break;
}
}
else
{
// child element found.
foundChild = (T)child;
break;
}
}
return foundChild;
}
public static T FindVisualChild<T>(DependencyObject obj) where T : DependencyObject
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
{
DependencyObject child = VisualTreeHelper.GetChild(obj, i);
if (child != null && child is T)
return (T)child;
T childOfChild = FindVisualChild<T>(child);
if (childOfChild != null)
return childOfChild;
}
return null;
}
public static void CheckAllBoxes(DependencyObject obj, bool? isChecked)
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
{
// If a checkbox, change IsChecked and continue.
if (obj is CheckBox)
{
CheckBox chk = ((CheckBox)obj);
chk.IsChecked = isChecked;
continue;
}
DependencyObject child = VisualTreeHelper.GetChild(obj, i);
CheckAllBoxes(child, isChecked);
}
}
}
public partial class DetallesAgenda : RibbonWindow
{
....
private void CheckBoxGrupo_Click(object sender, RoutedEventArgs e)
{
CheckBox handler = (CheckBox)e.Source;
FrameworkElement container = ((FrameworkElement)((FrameworkElement)handler.Parent).Parent);
FindControl.CheckAllBoxes(container, handler.IsChecked == true);
}
private void CheckBoxCabecera_Click(object sender, RoutedEventArgs e)
{
CheckBox handler = (CheckBox)e.Source;
FindControl.CheckAllBoxes(Tabla, handler.IsChecked == true);
}
}