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  • wpf 查找控件

    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;
            }
    
    
    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;
            }
    
    
    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;
            }
        }
    returnnull;
    }
    
    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);
        }
    
    returnnull;
    }
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  • 原文地址:https://www.cnblogs.com/akiing/p/11453132.html
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