实体框架：如果发生更改，请重新加载数据

Question

I need to load data from SQL Express and keep them valid.

This code loads data after 1sec sleep. No matter is there changes or not.

static void Main(string[] args)
{
    while (true)
    {
        ReloadData();   

        Thread.Sleep(1000);
    }
}

static void ReloadData()
{
    using (var db = new ProverkaEntities())
    {
        var ls = db.texts.ToList();
        foreach (var s in ls)
        {
            Console.WriteLine(s.text);
        }
        Console.WriteLine("======");
    }
}

Is there some way to reload data only if changes are occurred?

Answer 1

The truth is out there: How to use SqlDependency to get the notification in Entity Framework

Don't forget to enable Service Broker in your Db properties!