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  • zt:SilverLight遍历父子控件的通用方法

    SilverLight遍历父子控件的通用方法

    想从SilverLight中DataGrid找元素,真是麻烦,没有Rows对象,无法遍历。从网上找来这些方法,挺好用的:

    public class VTHelper()
    {
            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;
            }

            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;
            }

            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).Name == name || string.IsNullOrEmpty(name)))
                    {
                        childList.Add((T)child);
                    }
                    childList.AddRange(GetChildObjects<T>(child,""));
                }
                return childList;
            }
    }

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  • 原文地址:https://www.cnblogs.com/youfan/p/2005492.html
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