foreach (Dictionary<string, string> param in result)
{
	TableRow row = new TableRow();
	TableCell cell = new TableCell();
	DateTime date = DateTime.Parse(param["DATETIME"]);
	cell.Text = date.ToString();
	row.Cells.Add(cell);
	myTable.Rows.Add(row);
}

Result:

<table id="MainContent_myTable">
	<tbody><tr>
		<td>02/01/2017 09:39:00</td>
	</tr><tr>
		<td>02/01/2017 12:42:00</td>
	</tr><tr>
		<td>02/01/2017 13:45:00</td>
	</tr><tr>
		<td>02/01/2017 18:41:00</td>
	</tr><tr>
		<td>03/01/2017 09:14:00</td>
	</tr><tr>
		<td>03/01/2017 13:17:00</td>
	</tr><tr>
		<td>03/01/2017 14:17:00</td>
    </tr>
</tbody></table>