public void CheckTagValue()
{
access_data aa = new access_data();
try
{
aa.get_info_by_url(aa.GetUrlByUsingId(id));
metroGrid1.DataSource = aa.CheckEveryTagValue(aa.GetUrlByUsingId(id));
HtmlWeb web = new HtmlWeb();
HtmlAgilityPack.HtmlDocument doc = web.Load("http://" + aa.a);
DataGridViewImageColumn delbut = new DataGridViewImageColumn();
delbut.HeaderText = "Result";
delbut.Width = 20;
delbut.AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
metroGrid1.Columns.Add(delbut);
int i = metroGrid1.Rows.Count;
for (int j = 0; j < i; j++)
{
try
{
string tagname = metroGrid1.Rows[j].Cells["Tag Name"].Value.ToString();
string tagvalue = metroGrid1.Rows[j].Cells["Tag Value"].Value.ToString();
var link = doc.DocumentNode.SelectSingleNode(tagname);
string ParsedValue = link.InnerText.ToString();
if (ParsedValue == "")
{
metroGrid1.Rows[j].Cells[2].Value = Image.FromFile(Environment.CurrentDirectory + "/notavailable.png");
}
else if (ParsedValue == tagvalue)
{
metroGrid1.Rows[j].Cells[2].Value = Image.FromFile(Environment.CurrentDirectory + "/correct.png");
}
else
{
metroGrid1.Rows[j].Cells[2].Value = Image.FromFile(Environment.CurrentDirectory + "/invalid.png");
}
}
catch (System.NullReferenceException)
{
metroGrid1.Rows[j].Cells[2].Value = Image.FromFile(Environment.CurrentDirectory + "/notavailable.png");
}
}
}
catch (System.Net.WebException)
{
MetroMessageBox.Show(this, "The webpage at " + aa.a + " might be temporarily down or it may have moved permanently to a new web address", "WSH notify", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
