Try this one.
DataTable updatedDataTable = new DataTable();
for (int m = 0; m < mona.Rows.Count; m++) {
foreach (DataRow data in mona.Rows) {
double Balance = double.Parse(data["Balance"].ToString());
if (Balance > 0) {
updatedDataTable.Rows.Add(data);
}
}
}
use
updatedDataTable
as your new DataTable to display the filtered rows.