public class STU
{
public int ID { get; set; }
public string Name { get; set; }
public int Age { get; set; }
public string City { get; set; }
}
List<STU> stuList = new List<STU>()
{
new STU{ID=1,Name="Lily",Age=18,City="NewYork"},
new STU{ID=2,Name="Lucy",Age=20,City="NewYork"},
new STU{ID=1,Name="LiLei",Age=18,City="BeiJIng"}
};
foreach (IGrouping<string,STU> group in stuList.GroupBy(c=>c.City))
{
Console.WriteLine("当前的城市为" + group.Key);
foreach (STU stu in group.OrderBy(a=>a.Age))
{
Console.Write(stu.Name+";");
}
Console.WriteLine();
}
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