Send Image Audio Video And Message from C# to Whatsapp

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using WhatsAppApi;
using WhatsAppApi.Account;
using WhatsAppApi.Parser;
using WhatsAppApi.Helper;
using WhatsAppApi.Register;
using WhatsAppApi.Response;
using System.Net;
using System.IO;
using System.Drawing;
using WhatsAppPort;
public partial class _Default: System.Web.UI.Page
{
    WhatsUser user;
    protected void Page_Load(object sender, EventArgs e)
    {}
    private delegate void UpdateTextBox(TextBox textbox, string value);
    public void UpdateDataTextBox(TextBox textbox, string value)
    {
        textbox.Text += value;
    }
    protected void BtnSEND_Click(object sender, EventArgs e)
    {
        WhatsUserManager manager = new WhatsUserManager();
        user = manager.CreateUser("enter here phone number reg by wart tool", "Chandu");
        string number = "enter here phone number reg by wart tool"; // use number which is register from WART tool
        string to = txtTo.Text;
        string msg1 = txtMSG.Text;
        string password = "Enter here password generated by wart tool"; // use here password which is generated from WART tool
        UpdateTextBox textbox = UpdateDataTextBox;
        WhatsApp wa = new WhatsApp(number, password, "Chandu", true); // nickname u can provide any name
        string fileName1 = Path.GetFileName(FileUpload1.FileName);
        FileUpload1.SaveAs(System.IO.Path.Combine(Server.MapPath("~/Uploadfiles/"), FileUpload1.FileName)); //create folder Uploadfiles in ur project
        string upfile = Request.PhysicalApplicationPath + "Uploadfiles\\" + fileName1;
        FileStream fs = new FileStream(upfile, FileMode.Open, FileAccess.Read);
        BinaryReader br = new BinaryReader(fs);
        byte[] bytes = br.ReadBytes(Convert.ToInt32(fs.Length));
        br.Close();
        fs.Close();
        string getvideo = ("D:\\1.mp4");
        byte[] vv = File.ReadAllBytes(getvideo);
        string getaudio = ("D:\\Sleep Away.mp3");
        byte[] aa = File.ReadAllBytes(getaudio);
        wa.OnConnectSuccess += () =>
        {
            Response.Write("connect");
            wa.OnLoginSuccess += (phoneNumber, data) =>
            {
                Response.Write("\r\nconnection successfully");
                wa.SendMessage(to /* Number */ , msg1);
                wa.SendMessageImage(to + "@s.whatsapp.net", bytes, ApiBase.ImageType.JPEG);
                wa.SendMessageVideo(to + "@s.whatsapp.net", vv, ApiBase.VideoType.MP4);
                wa.SendMessageAudio(to + "@s.whatsapp.net", aa, ApiBase.AudioType.MP3);
            };
            wa.OnLoginFailed += (data) =>
            {
                Response.Write(txtrecieved + string.Format("\r\n login failed" + data));
            };
            wa.Login();
            wa.PollMessages();
        };
        wa.OnConnectFailed += (ex) =>
        {};
        wa.Connect();
    }
    protected void Button2_Click(object sender, EventArgs e)
    {}
}