/// <summary>
///
/// </summary>
/// <param name="level"></param>
/// <param name="trimSuffix"></param>
/// <returns></returns>
public IEnumerable <AdministrativeDivisionCn> Get(Level level, bool trimSuffix = true)
{
if (level > Level.Village)
{
level = Level.County;
}
if (level > 0)
{
var data = dataSet.Where(_ => _.Level <= (int)level).ToList();
return(GetChildren(data, 0L, Level.Province).Select(province => new AdministrativeDivisionCn
{
Code = province.Code,
Level = province.Level,
Display = trimSuffix ? TrimProvinceSuffix(province.Display) : province.Display,
Children = level > Level.Province ? GetChildren(data, province.Code, Level.City).Select(city => new AdministrativeDivisionCn
{
Code = city.Code,
Level = city.Level,
Display = trimSuffix ? TrimCitySuffix(city.Display) : city.Display,
Children = level > Level.City ? GetChildren(data, city.Code, Level.County).Select(county => new AdministrativeDivisionCn
{
Code = county.Code,
Level = county.Level,
Display = trimSuffix ? TrimCountySuffix(county.Display) : county.Display,
Children = level > Level.County ? GetChildren(data, county.Code, Level.Town).Select(town => new AdministrativeDivisionCn
{
Code = town.Code,
Level = town.Level,
Display = trimSuffix ? TrimTownSuffix(town.Display) : town.Display,
Children = level > Level.Town ? GetChildren(data, town.Code, Level.Village).Select(village => new AdministrativeDivisionCn
{
Code = village.Code,
Level = village.Level,
Display = trimSuffix ? TrimVillageSuffix(village.Display) : village.Display,
}) : null,
}) : null,
}) : null,
}) : null,
}));
}
else
{
return(new AdministrativeDivisionCn[0]);
}
}
/// <summary>
///
/// </summary>
/// <param name="code"></param>
/// <param name="level"></param>
/// <returns></returns>
public IEnumerable <AdministrativeDivisionCn> GetChildren(long code, Level level)
{
return(GetChildren(dataSet, code, level));
}
static IEnumerable <AdministrativeDivisionCn> GetChildren(IEnumerable <AdministrativeDivisionCn> data, long code, Level level)
{
if (level == Level.Province)
{
return(data
.Where(_ => _.Level == 1)
.OrderBy(_ => _.Code)
.ToList());
}
var _base = level switch
{
Level.City => _province,
Level.County => _city,
Level.Town => _county,
Level.Village => _town,
_ => 1L,
};
code = code / _base * _base;
return(data
.Where(_ => _.Level == (int)level && _.Code > code && _.Code < code + _base)
.OrderBy(_ => _.Display)
.ToList());
}
