Compile and Execute C# Sharp Online

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.IO;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            WebRequest myRequest = WebRequest.Create(@"https://tw.stock.yahoo.com/q/bc?s=1506");

            //Method選擇GET
            myRequest.Method = "GET";

            //取得WebRequest的回覆
            WebResponse myResponse = myRequest.GetResponse();

            //Streamreader讀取回覆
            StreamReader sr = new StreamReader(myResponse.GetResponseStream());

            //將全文轉成string
            string result = sr.ReadToEnd();

            //關掉StreamReader
            sr.Close();

            //關掉WebResponse
            myResponse.Close();
            System.Console.Write(result);
            Console.ReadLine();
            //搜尋頭尾關鍵字, 搜尋方法見後記(1)
            //int first = result.IndexOf("美元 = <em>");
            //int last = result.LastIndexOf("</em> 新台幣");

            //減去頭尾不要的字元或數字, 並將結果轉為string. 計算方式見後記(2)
            //string HTMLCut = result.Substring(first + 9, last - first - 9);
            //txtRate.Text = HTMLCut;
            
        }
    }
}