Untitled

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;


namespace ClickSite.AAA
{


    public partial class NameOfDiv : Form
    {
        public string textodatextbox;
        Form2 noway = new Form2();

        public NameOfDiv()
        {
            InitializeComponent();
            Teste scriptlog = new Teste();

            string vsf = textodatextbox = textBox1.Text;
            scriptlog.EscreverLog(vsf);


        }

        private void button1_Click(object sender, EventArgs e)
        {
            atimala();
        }
        private void atimala()
        {
            if (!string.IsNullOrWhiteSpace(textodatextbox))
            {
                MessageBox.Show("Não digitou nada");
            }
            else
            {
                textodatextbox = textBox1.Text;

                int startindex = noway.textorealdarich.IndexOf("<body>");
                int endindex = noway.textorealdarich.IndexOf("</body>");

                if(startindex != -1 && endindex != -1)
                {
                    string contentbeforebody = noway.textorealdarich.Substring(0, startindex + 6);
                    string contentafterbody = noway.textorealdarich.Substring(endindex);
                    string div = @"<div>

 </div>";
                    string novoscomands = contentbeforebody + div + contentafterbody;
                    noway.textorealdarich = novoscomands;


                }
                this.Close();
            }

        }
    }
}