public string ToJSONArray()
{
JSONArrayCallsigns a = new JSONArrayCallsigns(this);
JsonSerializerSettings settings = new JsonSerializerSettings();
settings.DateTimeZoneHandling = DateTimeZoneHandling.Utc;
settings.FloatFormatHandling = FloatFormatHandling.String;
settings.Formatting = Formatting.Indented;
string json = JsonConvert.SerializeObject(a, settings);
return(json);
}
public DataTable FromJSONArray(string filename)
{
if (!File.Exists(filename))
{
return(new DataTableCallsigns());
}
try
{
using (StreamReader sr = new StreamReader(File.OpenRead(filename)))
{
string json = sr.ReadToEnd();
JSONArrayCallsigns a = JsonConvert.DeserializeObject <JSONArrayCallsigns>(json);
// check version
if (String.Compare(Version, a.version) != 0)
{
// do upgrade/downgrade stuff here
}
foreach (List <string> l in a.calls)
{
string call = l[0];
double lat = System.Convert.ToDouble(l[1], CultureInfo.InvariantCulture);
double lon = System.Convert.ToDouble(l[2], CultureInfo.InvariantCulture);
GEOSOURCE source = GEOSOURCE.UNKONWN;
try
{
source = (GEOSOURCE)Enum.Parse(typeof(GEOSOURCE), l[3]);
}
catch
{
}
DateTime lastupdated = DateTime.UtcNow;
try
{
lastupdated = System.Convert.ToDateTime(l[4]);
}
catch
{
}
Update(new CallsignDesignator(call, lat, lon, source, lastupdated));
}
}
return(ToTable());
}
catch (Exception ex)
{
}
return(new DataTableCallsigns());
}