【轉】WPF尋找子控制項和父控制項方法

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一、尋找某種類型的子控制項，並返回一個List集合

public List<T> GetChildObjects<T>(DependencyObject obj, Type typename) where T : FrameworkElement        {            DependencyObject child = null;            List<T> childList = new List<T>();for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)            {                child = VisualTreeHelper.GetChild(obj, i);if (child is T && (((T)child).GetType() == typename))                {                    childList.Add((T)child);                }                childList.AddRange(GetChildObjects<T>(child,typename));            }return childList;        }

調用：

List<Button> listButtons = GetChildObjects<Button>(parentPanel, typeof(Button));

二、通過名稱尋找子控制項，並返回一個List集合

public List<T> GetChildObjects<T>(DependencyObject obj, string name) where T : FrameworkElement        {            DependencyObject child = null;            List<T> childList = new List<T>();for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)            {                child = VisualTreeHelper.GetChild(obj, i);if (child is T && (((T)child).GetType() == name |string.IsNullOrEmpty(name)))                {                    childList.Add((T)child);                }                childList.AddRange(GetChildObjects<T>(child,name));            }return childList;        }

調用：

List<Button> listButtons = GetChildObjects<Button>(parentPanel, "button1");

三、通過名稱尋找某子控制項：

public T GetChildObject<T>(DependencyObject obj, string name) where T : FrameworkElement{    DependencyObject child = null;    T grandChild = null;for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)    {        child = VisualTreeHelper.GetChild(obj, i);if (child is T && (((T)child).Name == name | string.IsNullOrEmpty(name)))        {return (T)child;        }else        {            grandChild = GetChildObject<T>(child, name);if (grandChild != null)return grandChild;        }    }return null;}

調用：

StackPanel sp = GetChildObject<StackPanel>(this.LayoutRoot, "spDemoPanel");

四、通過名稱尋找父控制項

public T GetParentObject<T>(DependencyObject obj, string name) where T : FrameworkElement{    DependencyObject parent = VisualTreeHelper.GetParent(obj);while (parent != null)    {if (parent is T && (((T)parent).Name == name | string.IsNullOrEmpty(name)))        {return (T)parent;        }        parent = VisualTreeHelper.GetParent(parent);    }return null;}

調用：

Grid layoutGrid = VTHelper.GetParentObject<Grid>(this.spDemoPanel, "LayoutRoot"); 

原文地址：https://www.cnblogs.com/udoless/p/3381411.html

【轉】WPF尋找子控制項和父控制項方法