委托+线程的一般用法

namespace ConsoleApplication1
{
public delegate void Del(int data);
class Program
{
//Action<int>
//Func<int,int>
static void Main(string[] args)
{
fun();
}

static void fun()
{
Del callback = new Del((dataaaa) =>
{
Console.WriteLine(dataaaa);
});

callback += btn_click;

Thread t = new Thread(()=>
{
childThreadMethod(callback);
});
t.Start();

Console.ReadKey();

}

public static void btn_click(int data)
{
Console.WriteLine(data + 10);
}

static void childThreadMethod(Del d)
{
Thread.Sleep(5000);
int data = 10;
d(data);
}
}
}