private static void Main()
{
var context = new GeographyEntities();
var xmlDoc = XDocument.Load("../../rivers.xml");
var riverElements = xmlDoc.Root.Elements();
foreach (var riverElement in riverElements)
{
var riverEntity = new River();
riverEntity.RiverName = riverElement.Element("name").Value;
riverEntity.Length = int.Parse(riverElement.Element("length").Value);
riverEntity.Outflow = riverElement.Element("outflow").Value;
if (riverElement.Element("drainage-area") !=null)
{
riverEntity.DrainageArea = int.Parse( riverElement.Element("drainage-area").Value);
}
if (riverElement.Element("average-discharge") != null)
{
riverEntity.AverageDischarge = int.Parse(riverElement.Element("average-discharge").Value);
}
ParseAndAddCountriesToRiver(riverElement, context, riverEntity);
context.Rivers.Add(riverEntity);
}
context.SaveChanges();
}
private static void ParseAndAddCountriesToRiver(
XElement riverElement, GeographyEntities context, River riverEntity)
{
var countryElements = riverElement.XPathSelectElements("countries/country");
foreach (var countryElement in countryElements)
{
var countryName = countryElement.Value;
var countryEntity = context.Countries.FirstOrDefault(c => c.CountryName == countryName);
if (countryEntity != null)
{
riverEntity.Countries.Add(countryEntity);
}
else
{
throw new Exception(string.Format("Cannot find country {0} in the DB", countryName));
}
}
}
