String lastDate = null;
TableRow row = new TableRow();
foreach (Dictionary<string, string> param in result)
{
	DateTime data = DateTime.Parse(param["DATETIME"]);
	if (lastDate == data.ToString())
	{
		TableCell cell = new TableCell();
		cell.Text = "equal"+data.ToString();
		row.Cells.Add(cell);
		myTable.Rows.Add(row);
	} else
	{
		TableRow row2 = new TableRow();
		TableCell cell = new TableCell();
		cell.Text = "non-equal"+data.ToString();
		row2.Cells.Add(cell);
		myTable.Rows.Add(row2);
	}
	lastDate = data.ToString();
}