支持Undo/redo的列表操作,来自于CodeProject-undo and redo for datagrid, from codeproject

给一个黑白棋的源码，其中有网络部门，可以实现下棋，悔棋，判断输赢功能，有源码大家可以相互学习-To Othello' s source the network department chess, undo determine winning or losing functionality, the source that we can learn from each other

撤销按钮动作的下拉键,及下拉列表实现,通过点击撤销或返回列表中的某一列-Undo button action drop-down button, and the realization of the drop-down list, click cancel or return through the list in a column