public CitynamesEntity RetrieveEntity()
{
if (!File.Exists(this.filePath))
{
throw new FileNotFoundException(this.filePath);
}
var result = new CitynamesEntity();
using (var reader = new StreamReader(this.filePath))
{
string pattern = @"\s+";
string line = reader.ReadLine()?.Trim();
if (string.IsNullOrEmpty(line))
{
throw new InvalidDataException(this.filePath);
}
var array = Regex.Split(line, pattern);
result.Description = array[0];
var count = 0;
while ((line = reader.ReadLine()?.Trim()) != null)
{
count++;
array = Regex.Split(line, pattern);
if (array.Length != 3)
{
throw new InvalidDataException(this.filePath);
}
var item = new CitynamesEntityItem();
item.Longitude = Convert.ToSingle(array[0]);
item.Latitude = Convert.ToSingle(array[1]);
item.Name = array[2];
result.Items.Add(item);
}
}
return(result);
}
private GraphicsLayer GenerateGraphicLayer(CitynamesEntity entity, Color color)
{
var graphics = new List <Graphic>();
foreach (var item in entity.Items)
{
if (item.Longitude >= -180 && item.Longitude <= 180 && item.Latitude >= -90 && item.Latitude <= 90)
{
graphics.Add(GenerateGraphic(item, color));
}
}
var layer = new GraphicsLayer
{
GraphicsSource = graphics,
DisplayName = entity.Description,
ID = new Guid().ToString()
};
return(layer);
}
