После нескольких дней изучения и улучшения кода я решил изменить список для таблицы. Кроме того, теперь запросы не дублируются и располагаются в таблице, как и ожидалось
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 SourceDownloader
{
public partial class Form1 : Form
{
strs valor = new strs();
public Form1()
{
InitializeComponent();
}
WebBrowser navegador = new WebBrowser();
private void Form1_Load(object sender, EventArgs e)
{
navegador.ScriptErrorsSuppressed = true;
navegador.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(this.datos);
}
private void datos(object sender, EventArgs e)
{
try
{
foreach (HtmlElement etq in navegador.Document.All)
{
if (etq.GetAttribute("classname").Contains("r")) /// LC20lb DKV0Md
{
foreach (HtmlElement a_et in etq.GetElementsByTagName("a"))
{
valor.link = a_et.GetAttribute("href");
}
foreach (HtmlElement t_et in etq.GetElementsByTagName("h3"))
{
valor.tit = t_et.InnerText;
}
bool exist = dataGridView1.Rows.Cast<DataGridViewRow>().Any(row => Convert.ToString(row.Cells["link"].Value) == valor.link);
var s1 = valor.link;
bool b = s1.Contains("google.com");
bool a = s1.Contains("googleusercontent");
if (!exist /* && !b && !a*/)
{
dataGridView1.Rows.Insert(0, valor.tit, valor.link);
}
}
if (etq.GetAttribute("classname").Contains("G0iuSb"))
{
valor.next = etq.GetAttribute("href");
}
}
more_ops.Enabled = true;
}
catch (Exception)
{
}
}
private void function(object sender, EventArgs e)
{
string query = "https://google.com/search?q=" + query_box.Text;
navegador.Navigate(query);
this.Text = query;
}
private void more_ops_Click(object sender, EventArgs e)
{
string query = valor.next;
navegador.Navigate(query);
this.Text = query;
}
private void dataGridView1_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)
{
try
{
var msg = dataGridView1.CurrentCell.Value;
System.Diagnostics.Process.Start(msg.ToString());
}
catch (Exception)
{
MessageBox.Show("Error");
}
}
private void Enter(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == (char)Keys.Return)
{
string texto = query_box.Text;
texto = texto.Replace("\n", "");
query_box.Text = texto;
string query = "https://google.com/search?q=" + query_box.Text;
navegador.Navigate(query);
this.Text = query;
}
}
}
/// global values
class strs
{
private string _link = "N/A";
private string _tit = "N/A";
private string _next = "N/A";
public string tit
{
get
{
return _tit;
}
set
{
_tit = value;
}
}
public string link
{
get
{
return _link;
}
set
{
_link = value;
}
}
public string next
{
get
{
return _next;
}
set
{
_next = value;
}
}
}
}