委托

一、WPF委托

this.Dispatcher.Invoke(new Action(delegate
                            {
                               
                            }));

二、C#委托

1、 Task.Factory.StartNew((a) =>
            {
                   //异步执行的代码
            }, objects);    //其中objects是一个参数集合

2、
//声明委托
 public delegate string RequestDataDel(Uri x, string y);//括号内为需要的参数类型
//同步
public string RequestData(string Url, string Parameters)
        {
            RequestDataDel byteRe = RequestData;
            //同步调用委托
            IAsyncResult result = byteRe.BeginInvoke(new Uri(Url), Parameters, new AsyncCallback(ReturnResult), "AsycState:OK");
            RequestDataDel handler = (RequestDataDel)((AsyncResult)result).AsyncDelegate;
            var ss = handler.EndInvoke(result);
            return ss;
        }
 public string RequestData(Uri uri, string parameters)
        {
}
*****************************************************************************************************************************

//异步
方法A（）
{
　　IAsyncResult result = byteRe.BeginInvoke(interfaceUri, string.Format("{0}", JsonConvert.SerializeObject(JSon)), new AsyncCallback(ReturnResult), "AsycState:OK");
}
//调用ReturnResult进行异步委托
public static void ReturnResult(IAsyncResult result)
        {
            RequestDataDel handler = (RequestDataDel)((AsyncResult)result).AsyncDelegate;
            string backVal = handler.EndInvoke(result);
            if (!string.IsNullOrWhiteSpace(backVal))
            {
            }
        }