利用SilverLight 遍歷父子控件通用方法

利用silverlight 遍歷父子控件通用方法

silverlight中datagrid找元素，真是麻煩，沒有rows對象，無法遍歷。從網上找來這些方法，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;
        }
}