＆＃34;糟糕的事情出了问题:(稍后再试一次＆＃34;在WebClient中

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
using System.Net;
using System.Collections.Specialized;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
          string url = "https://example.tj/service";

          using (var webClient = new WebClient())
          {
                String str = "SomeTextForText";
                var response = webClient.UploadString(url, str);
          }
    }
}

为什么我要

  

糟糕的事情出了问题:(稍后再试一次

就行了

webClient.UploadString(url, str);