接口异步调用

1.先创建一个WCf的应用程序

2.在窗体里调用的步骤

2.1添加接口
//异步调用

    private void button1_Click(object sender, EventArgs e)
    {//方法一：自己开辟线程

//1.1用Thread开辟线程是比较老的方法

        Thread thread = new Thread(() =>
        {
            Service2.Service2Client client = new Service2.Service2Client();
            int result = client.Sum(1, 3);
            MessageBox.Show(result + "");

        });
        thread.Start();
        }

//方法1.2

        private void button1_Click(object sender, EventArgs e)
        {
        //1.2使用task开辟
        Task.Run(() =>
        {
            Service2.Service2Client client = new Service2.Service2Client();
            int result = client.Sum(1, 3);
            MessageBox.Show(result + "");

        });

        }

//方法2

private void button1_Click(object sender, EventArgs e)
{

         CallSumAsyuc();

}

方法2”方法CallSumAsyuc()”的位置

        public async void CallSumAsyuc()
        {
            Service2.Service2Client client = new Service2.Service2Client();
            int result = await client.SumAsync(1, 3);
            MessageBox.Show(result + "");
        }

//方法3

private void button1_Click(object sender, EventArgs e)
{

             //首先在 Service2右击“配置服务应用”=>"点生成异步操作"
            Service2.Service2Client client = new Service2.Service2Client();
            client.SumAsync(6,6);
             //接口方法执行完毕后执行
            client.SumCompleted += client_SumCompleted;

}

方法client.SumCompleted += client_SumCompleted处

public void client_SumCompleted(object sender, Service2.SumCompletedEventArgs e)
{
MessageBox.Show(“接口返回值:”+e.Result);
}