泛型集合

单列集合

List<t>list=new List<t>();

双列集合

不能用for循环遍历,因为双列集合没有下标索引值

Dictionary<string,Student> dic=new Dictionary<string,Student>();
dic.add("张三",stu1);
dic.add("李四",stu2);

//1种
foreach(string item in dic.Keys)
{
Student stu=dic[item];
}
//第二种

foreach(Student item in dic.Values)
{
Student stu=dic[item];
}
//第三种
}
foreach(KeyValuePair<string,Student> item in dic)
{
//item=key+Value
item.Key
item.Value
}

单列集合数据绑定

List<UserInfo> list;

dgvList.DataSource=new BindingList<UserInfo>(list);

双列集合数据绑定

Dictionary<string,Student> dic=new Dictionary<string,Student>();
BindingSource bs=new BindingSource();
bs.DataSource=dic.Values;
dgvList.DataSource=bs;