You will have to use jquery and
loop through all < table>< tbody> and < tr>s inside that table..
fetch the data..
store data in a variables
read it from c#
dump it in your database.
here is an how it goes
<table>
<tbody>
<tr>
<td>
Item1
</td>
</tr>
<tr>
<td>
Value
</td>
</tr>
</tbody>
</table>
here is the jquery
$('table > tbody > tr').each(function() {...code...});
you can use td:first-child or td:nth-child(2) inside the abovefunction to select the < td>'s
hope this will help..
[edit]Format and Code block fixed[/edit]