public async void Update(City item)
{
var cityInDb = await context.Cities.FindAsync(item.Id);
if (cityInDb != null)
{
context.Entry(cityInDb).CurrentValues.SetValues(item);
context.Entry(cityInDb).State = EntityState.Modified;
}
}
public void Update(HistoryRecord item)
{
context.Entry(item).State = System.Data.Entity.EntityState.Modified;
}