如何在Entity Framework中查询整数列中的"starts with"？

using System.Data.Entity;
using System.Linq;
using System.Data.Objects;

public class MyContext : DbContext
{
    public DbSet<MyEntity> MyEntities { get; set; }
}

public class MyEntity
{
    public int Id { get; set; }
    public int IntegerValue { get; set; }
}

public class Program
{
    public static void Main()
    {
        var context = new MyContext();
        var query = from e in context.MyEntities
                    where SqlFunctions.StringConvert((double)e.IntegerValue).StartsWith("123")
                    select e;
        var result = query.ToList();
    }
}