public static List <string> GetProvincesGroupBy(PersonList persons)
{
var result = new List <string>();
foreach (var item in persons.GroupBy(x => x.Province))
{
result.Add(item.Key);
}
return(result);
}
public static List <PersonsInProvince> GetProvincesPersons(PersonList persons)
{
var result = new List <PersonsInProvince>();
foreach (var item in persons.GroupBy(x => x.Province))
{
var data = new PersonsInProvince
{
ProvinceName = item.Key,
Amount = item.Count()
};
result.Add(data);
}
return(result);
}