How to Check Wheather a Video URL is valid or not

Hi guys, some times you may got a requirement that whether the video url provided by the user is valid or not, you can check it by using the below codes.

using System;

using System.Collections;

using System.Collections.Generic;

using System.Data;

using System.Diagnostics;

public class UrlValidity

{

  public static bool IsValid(string Url)

  {

   Stream sStream = default(Stream);

   HttpWebRequest URLReq = default(HttpWebRequest);

   HttpWebResponse URLRes = default(HttpWebResponse);

  try {

        URLReq = WebRequest.Create(Url);

        URLRes = URLReq.GetResponse();

        sStream = URLRes.GetResponseStream();

        string reader = new StreamReader(sStream).ReadToEnd();

        return true;

     }
     catch (Exception ex) 
      {

           //Url not valid

           return false;

      }

  }

}