WPF常用方法，事件驱动和控件遍历

//初始化数据，默认选中第一项，事件驱动

RadioButton btn = FuncClass.GetChildObject<RadioButton>(this.stackPanel1, "btnname");
if (btn != null)
{
btn.IsChecked = true;
btn.RaiseEvent(new RoutedEventArgs(System.Windows.Controls.Primitives.ButtonBase.ClickEvent, btn));
}

遍历一类控件或一个控件：

        /// <summary>
        /// 根据控件名找子控件
        /// <para>调用方法：</para>
        /// <para>Button btnMax = FuncClass.GetChildObject(Button)(this, "btnMax");</para>
        /// </summary>
        /// <typeparam name="T">控件类型</typeparam>
        /// <param name="obj">父控件</param>
        /// <param name="name">要找的子控件名称</param>
        /// <returns>返回子控件，若没找到返回 null</returns>
        public static T GetChildObject<T>(System.Windows.DependencyObject obj, string name) where T : System.Windows.FrameworkElement
        {
            System.Windows.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;
        }

        /// <summary>
        /// 遍历一类控件
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static List<T> GetChildObjects<T>(DependencyObject obj) 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 && !string.IsNullOrEmpty(((T)child).Name))
                {
                    childList.Add((T)child);
                }
                childList.AddRange(GetChildObjects<T>(child));
            }
            return childList;
        }

WPF 窗体居中:
this.WindowStartupLocation = WindowStartupLocation.CenterScreen;