How to find the visual parent or child element using VisualTreeHelper in WPF

Introduction

In this article ,i will describe how to find the parent object or control in WPF using VisualTreeHelper.The VisualTreeHelper is very useful class which help us to find or drill-down element from the hosted container.

The following method will help you to find the visual parent element from the container.

public static T FindVisualParent<T>(UIElement element) where T : UIElement
    {
        UIElement parent = element;while (parent != null)
        {
            T correctlyTyped = parent as T;if (correctlyTyped != null)
            {return correctlyTyped;
            }
            parent = VisualTreeHelper.GetParent(parent) as UIElement;
        }return null;
    }

The following method will help you to find the child element from the container.

public static T FindChild<T>(DependencyObject parent)where T : DependencyObject
    {if (parent == null) return null;

        T childElement = null;int childrenCount = VisualTreeHelper.GetChildrenCount(parent);for (int i = 0; i < childrenCount; i++)
        {
            var child = VisualTreeHelper.GetChild(parent, i);
            T childType = child as T;if (childType == null)
            {
                childElement = FindChild<T>(child);if (childElement != null) break;
            }else{
                childElement = (T)child;break;
            }
        }return childElement;
    }

 That's all, i hope this is help to you.