/// <summary>

        /// 查找子控件

        /// </summary>

        /// <typeparam name="T">控件类型</typeparam>

        /// <param name="parent">父控件依赖对象</param>

        /// <param name="lstT">子控件列表</param>

        public static void FindVisualChild<T>(DependencyObject parent, ref List<T> lstT) where T : DependencyObject

        {

            if (parent != null)

            {

                T child = default(T);

                int numVisuals = VisualTreeHelper.GetChildrenCount(parent);

                for (int i = ; i < numVisuals; i++)

                {

                    Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);

                    child = v as T;

                    if (child != null)

                    {

                        lstT.Add(child);

                    }

                    FindVisualChild<T>(v, ref lstT);

                }

            }

        }

        private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)

        {

            DataGridRow currentRow = (DataGridRow)dgdRel.ItemContainerGenerator.ContainerFromIndex(dgdRel.SelectedIndex);   //获取当前行

            if (currentRow != null)

            {

                List<Control> lstControl = new List<Control>();

                FormDispose.FindVisualChild<Control>(currentRow, ref lstControl);  //获取当前行内所有的控件

                if (lstControl != null)

                {

                   //子控件的处理代码

                }

            }

        }