Count rows and columns in Html Table having subtables using HtmlAgilityPack
html-agility-pack html-table vb.net
Question
I'm parsing an Html table and I need the columns and rows count.
I tryed using:
ColNum = mTables(1).SelectNodes(".//th").Count
RowNum = mTables(1).SelectNodes(".//tr").Count
But I get a wrong results if table has one or more subtables.
Here's a sample of html table I need to parse:
<table border='1'>
<tbody>
<tr><th>Some Text</th><th>Some Text</th><th>Some Text</th></tr>
<tr><td>Some data</td><td>Some data</td><td>Some data</td></tr>
<tr><td>Some data</td><td>Some data
<table border='1'>
<tbody>
<tr><th>Some Text</th><th>Some Text</th></tr>
<tr><td>Some Data</td><td>Some Data</td></tr>
</tbody>
</table><td>Some data</td></tr>
<tr><td>Some data</td><td>Some data</td><td>Some data</td></tr>
<tr><td>Some data</td><td>Some data</td><td>Some data</td></tr>
</tbody>
</table>
In this sample I need this results: Columns = 3 Rows = 5
How can I get the number of the rows and columns (only for the main table) without counting the subtable rows and columns?
Popular Answer
I solved this way:
For columns:
ColNum = mTables(1).SelectSingleNode(".//tbody//tr[1]").SelectNodes(".//th").Count
For Rows:
First: Check for SubTables
Dim SubTbl%
Try
SubTbl% = mTables(1).SelectNodes(".//table").Count
Catch ex As Exception
SubTbl% = 0
End Try
Then: Count Rows in Subtables and subtract from total rows
Dim SubTRows% = 0
If SubTables > 0 Then
For SubT As Short = 1 To SubTables
Dim STRows% = mTables(1).SelectNodes(".//table[" & SubT & "]//tr").Count
SubTRows += STRows
Next
RowsNum = mTables(1).SelectNodes(".//tr").Count - SubTRows
Else
RowsNum = mTables(1).SelectNodes(".//tr").Count
End If
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