c#写的一个贪吃蛇游戏，功能比较齐全，界面比较美观大方，可以设置初始时：食物的个数，网格的数量，蛇移动的速度，和蛇的长度，并且显示得分。-c# to write a Snake game, relatively complete, the interface is nice, you can set the initial number of: food, the number of grid snake moving speed, and the length of the snake, an