如何在ADO.NET EF 4.1中记录记录？

public class MyDbContext : DbContext
{
    public DbSet<Record> Records { get; set; }
}

public class Record
{
    public int Id { get; set; }
    public string Name { get; set; }
    // 其他属性...
}

using (var context = new MyDbContext())
{
    var record = new Record { Name = "Example Record" };
    context.Records.Add(record);
    context.SaveChanges();
}

using (var context = new MyDbContext())
{
    var record = context.Records.FirstOrDefault(r => r.Id == 1);
    if (record != null)
    {
        record.Name = "Updated Record";
        context.SaveChanges();
    }
}

using (var context = new MyDbContext())
{
    var record = context.Records.FirstOrDefault(r => r.Id == 1);
    if (record != null)
    {
        context.Records.Remove(record);
        context.SaveChanges();
    }
}