tuple元组：
赋值
List<Tuple<string, int>> cc = new List<Tuple<string, int>>()
{
new Tuple<string, int>("满减5", 1),
new Tuple<string, int>("满减2", 2),
new Tuple<string, int>("满减5", 3),
new Tuple<string, int>("满减1", 4)
};
取值
1 foreach (var item in cc)
2 {
3 string ite = item.Item1;
4 int ctNum = item.Item2;
5 }
说明：可以当一个简单的类来用
list.ForEach的用法
1 cac.ForEach(delegate(cfg_AttributeChild ac)//list.ForEach的用法
2 {
3 Attributec a = new Attributec();
4 a.ID = Convert.ToInt32(ac.ID);
5 a.msg = ac.Name;
6 a.url = ac.Url;
7 a.color = ac.Color;
8 abc.Add(a);
9
10 });
