Task异步

快速示例

    class Program
    {
        static void Main(string[] args)
        {
            //Console.WriteLine("main start..");
            //AsyncMethod();
            ////
            //Console.WriteLine("main end..");
            String ss = "aa";

            Console.WriteLine(ss.GetType());
            Console.WriteLine(ss.GetType()==typeof(string));
            Console.ReadLine();

        }


        static async void AsyncMethod()
        {
            try
            {
                Console.WriteLine("start async");
                HttpContent _content = new StringContent("", Encoding.UTF8);
                _content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
                var _client = new HttpClient();
                var _response = _client.PostAsync("http://github.com", _content).Result;
                var _json_result = _response.Content.ReadAsStringAsync().Result;
                Thread.Sleep(1000);
                Console.WriteLine("end async");
                throw new Exception("huhuhu");
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                
            }

            
            //return 1;
        }

        static async Task<int> MyMethod()
        {
            for (int i = 0; i < 5; i++)
            {
                Console.WriteLine("Async start:" + i.ToString() + "..");
                await Task.Delay(1000); //模拟耗时操作
            }
            return 0;
        }
    }

 

 

返回

class Program
    {
        static void Main(string[] args)
        {
            Task<List<Product>> tk1 = Task<List<Product>>.Factory.StartNew(() => SetProduct());
            Task.WaitAll(tk1);
            Console.WriteLine(tk1.Result.Count);
            Console.WriteLine(tk1.Result[0].Name);
            Console.ReadLine();
        }
        static List<Product> SetProduct()
        {
            List<Product> result = new List<Product>();
            for (int i = 0; i < 500; i++)
            {
                Product model = new Product();
                model.Name = "Name" + i;
                model.SellPrice = i;
                model.Category = "Category" + i;
                result.Add(model);
            }
            Console.WriteLine("SetProduct   执行完成");
            return result;
        }
    }

 

 

 

 

 

 

http://www.cnblogs.com/woxpp/p/3928788.html