How to Generate Video Thumbnail with Title from url in C# ASP.NET

In this article, i am going to give overview on how to generate thumbnail dynamically. 
aspx page

<asp:Image ID="imgThumbnail" runat="server" />

aspx.cs page

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindThumbnailWithTitle();
        }
    }

    void BindThumbnailWithTitle()
    {
        string videoUrl = "https://www.youtube.com/watch?v=pA9QUnloZtw";
        imgThumbnail.ImageUrl = GenerateThumbnail(videoUrl);
        GenerateTitle(videoUrl);
    }

    // generate and return thumbnail by just getting the video url
    public string GenerateThumbnail(string videoUrl)
    {
        string imgLink = "http://img.youtube.com/vi/"; // Common part of every thumbnail url
        string[] videoLink = videoUrl.Split(new char[] { '=', '&' }); //Split code part from url
        imgLink = imgLink + videoLink[1] + "/1.jpg"; // '/1.jpg' is to choose thumbnail image
        return imgLink;
    }

    private void GenerateTitle(string url)
    {
        if (!string.IsNullOrEmpty(url))
        {
            string content = string.Empty;
            string firstCharacters = url.Substring(0, 3);
            if (firstCharacters.ToLower() == "www")
            {
                url = "http://" + url;
            }

            if (firstCharacters.ToLower() == "htt" || firstCharacters.ToLower() == "www")
            {
                try
                {
                    WebRequest webRequest = WebRequest.Create(url);
                    WebResponse webResponse = webRequest.GetResponse();
                    StreamReader sr = new StreamReader(webResponse.GetResponseStream(), System.Text.Encoding.GetEncoding("UTF-8"));
                    content = sr.ReadToEnd();// Content of page

                    //Split the content between the title tag
                    content = content.Substring(content.IndexOf("<title>") + 7);
                    content = content.Substring(0, content.IndexOf("</title>"));

                    //display it by using write method
                    Response.Write(content);
                }

                catch (Exception)
                {
                    content = "Url Provided by you is invalid";
                    Response.Write(content);
                }
            }

            else
            {
                content = "Url Provided by you is invalid";
                Response.Write(content);
                return;
            }
        }
    }

That’s it!!…..Happy Programming...