I don't know if you managed to solve your problem already. If you didn't here is how.
private DependencyObject FindChildControl<T>(DependencyObject control, string ctrlName)
{
int childNumber = VisualTreeHelper.GetChildrenCount(control);
for (int i = 0; i < childNumber; i++)
{
DependencyObject child = VisualTreeHelper.GetChild(control, i);
FrameworkElement fe = child as FrameworkElement;
// Not a framework element or is null
if (fe == null) return null;
if (child is T && fe.Name == ctrlName)
{
// Found the control so return
return child;
}
else
{
// Not found it - search children
DependencyObject nextLevel = FindChildControl<T>(child, ctrlName);
if (nextLevel != null)
return nextLevel;
}
}
return null;
}
usage is very simple, for example in my case
ComboBox cb= FindChildControl<ComboBox>(HUB_HC, "SemanaHC") as ComboBox;
Where HUB_HC is my HubSection name and SemanaHC is a combobox inside that HubSection witch is also inside of a StackPanel. It works for me and it's simple to use
Reference: How to access a Control inside the data template in C# Metro UI in the code behind
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