程序代码：

        //定义存储每个柱子上可移动标签的泛型集合
        List<List<Label>> seleckedCanMoveLb = new List<List<Label>>();
        for (int i = 0; i < 3; i++)
        {
            seleckedCanMoveLb[i] = new List<Label>();
        }
/*
        for (int i = 0; i < seleckedCanMoveLb[index].Count; i++)
       {
             seleckedCanMoveLb[index}[i]
       }*/
/*     for (int i = 0; i < seleckedCanMoveLb[index].Count; i++)
       {
             seleckedCanMoveLb[index}[i]
        }*/