Entity Framework MySql: DbGeometry not read from the DB - mysql

Question

I have a this model:
public partial class UserPosition
{
...
public DbGeometry Position { get; set; }
...
}
I create this object and save it to the MySql DB (db is my DBContext):
var pos = new UserPosition
{
...
Position = GeographyHelper.CreatePoint(request.Latitude, request.Longitude),
...
};
db.UserPositions.Add(pos);
db.SaveChanges();
GeographyHelper.CreatePoint:
/// <summary>
/// Creates a DbGeometry point from latitude and longitude values
/// </summary>
/// <param name="latitude"></param>
/// <param name="longitude"></param>
/// <returns></returns>
public static DbGeometry CreatePoint(double latitude, double longitude)
{
var text = string.Format(CultureInfo.InvariantCulture.NumberFormat, "POINT({0} {1})", longitude, latitude);
// 4326 is most common coordinate system used by GPS/Maps
return DbGeometry.PointFromText(text, 4326);
}
The value is perfectly saved to to DB:
POINT (19.038934 47.531)
But when I read the value from the DB, the Position is null, other fields are OK:
var rec = db.UserPositions.FirstOrDefault()
I get the right record because the ID matches.
Why is the Position null?
Visual Studio 2015, .NET 4.5.2, EntityFramework 6.2.0, MySql.Data.Entity.EF6 6.9.12, MySql database version: 5.6.15.

Answer 1

It was globalization problem: decimal point was saved to the DB but couldn't parse the same geometry data when read because decimal comma was needed (for Double.TryParse()) because of the globalization. The fast solution was to set the globalization to en-US in web.config but I accept if you know better solution :)
<configuration>
<system.web>
<globalization uiCulture="en-US" culture="en-US"/>
...