Adding HTML table to datagridview using HTML Agility pack
c# datagridview html html-agility-pack parsing
Question
I writing simple app for parsing HTML table to datagridview using the help of HTML Agility pack. but when I run the code it throw me an error "This row already belongs to this table"
I need to parse simple HTML table like below
<html>
<head>
</head>
<body>
<table>
<tr>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Germany</td>
</tr>
<tr>
<td>Alfreds Futterkiste</td>
<td>Maria Anders</td>
<td>Germany</td>
</tr>
</table>
</body>
</html>
this is my code
private void button1_Click(object sender, EventArgs e)
{
var htmlCode = richTextBox1.Text.Trim();
var doc = new HtmlDocument();
doc.LoadHtml(htmlCode);
dt = new DataTable();
dt.Columns.Add("Company", typeof (string));
dt.Columns.Add("Contact", typeof (string));
dt.Columns.Add("Country", typeof (string));
var count = 0;
foreach (var table in doc.DocumentNode.SelectNodes("//table"))
{
foreach (var row in table.SelectNodes("//tr"))
{
var dr = dt.NewRow();
var i = 0;
foreach (var cell in row.SelectNodes("//td"))
{
dr["Company"] = cell.InnerText.Replace(" ", "");
dr["Contact"] = cell.InnerText.Replace(" ", "");
dr["Country"] = cell.InnerText.Replace(" ", "");
}
dt.Rows.Add(dr);
}
grid.DataSource = dt;
}
}
I need a simple output on datagridview like this
How can I do this with HTML Agility pack ?
Accepted Answer
Move the following line
dt.Rows.Add(dr);
outside the foreach loop over the table cells. You try to add the same row multiple times to the DataTable.
int i = 0;
foreach (var cell in row.SelectNodes("//td"))
{
dr[i++] = cell.InnerText;
}
dt.Rows.Add(dr);
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