GenericHashset

//构建泛型哈希集
HashSet<UserInfo> users = new HashSet<UserInfo>();

for (int i = 0; i < 10; i++)
{
users.Add(new UserInfo(i % 2, "User0" + i.ToString(), "0" + i.ToString()));
}
//LINQ对泛型哈希集进行排序操作
var query = from item in users
                 orderby item.UserCode,item.UserName
                 select item;

Response.Write("显示查询结果<br/>");
foreach (var item in query)
{
Response.Write(string.Format("({0},{1})", item.UserCode, item.UserName));
Response.Write("<br/>");
}