c# - 控制位置在运行时移动后不更新

Question

我有一个应用程序需要在画布中动态创建和移动文本块，稍后保存布局并加载布局。我面临的问题是获取文本块的位置很累。我尝试了这两种方法，但它不起作用

item.GetValue(TranslateTransform.XProperty).ToString();//always give zero
Canvas.GetTop(item);//always gives the initial position, does not update after dragging.

Answer 1

从控件获取坐标：

foreach (UIElement el in mapGrid.Children)
        {
            XElement control = new XElement("control");

            var ele = (HumanWorkspace)el;
            Vector v = VisualTreeHelper.GetOffset(el);
            double x = v.X;
            double y = v.Y;
            XAttribute atd = new XAttribute("direction", ele.Direction.ToString("d"));
            XAttribute atx = new XAttribute("x", v.X.ToString());
            XAttribute aty = new XAttribute("y", v.Y.ToString());
            control.Add(atd);
            control.Add(atx);
            control.Add(aty);
            controls.Add(control);
        }

加载状态时设置坐标：

foreach (XElement ele in doc.Elements("controls"))
            {
                var con = new HumanWorkspace();
                con.Direction = (WorkspaceDirection)int.Parse(ele.Attribute("direction").Value);
                con.SetValue(TranslateTransform.XProperty, double.Parse(ele.Attribute("x").Value));
                con.SetValue(TranslateTransform.YProperty, double.Parse(ele.Attribute("y").Value));
            }