C#

DataTable dtBilling = new DataTable();
            dtBilling.Columns.Add("Product Name");
            dtBilling.Columns.Add("Price");
            dtBilling.Columns.Add("Unit Price");
            dtBilling.Columns.Add("Total");

            dtBilling.Rows.Add("Prod1", "100", "2.50", "250");
            dtBilling.Rows.Add("Prod1", "200", "3.50", "3250");
            dtBilling.Rows.Add("Prod1", "300", "4.50", "450");
            dtBilling.Rows.Add("Prod1", "400", "5.50", "550");

            if (dtBilling.Rows.Count > 0)
            {
                dgBilling.DataSource = dtBilling;
            }

Blikkies wrote:

vb would be much easier

Quake2Player wrote:

Sorry bad english

public class Item
{
  public int Number;
  public DateTime Time;
  public string Message;
}

public class ItemCollection : List<Item>
{
    public void SortByNumber()
    {
        Sort((Item a, Item b) => a.Number.CompareTo(b.Number));  
    }

    public void SortByTime()
    {
        Sort((Item a, Item b) => a.Time.CompareTo(b.Time));
    }

    public void SortByMessage()
    {
        Sort((Item a, Item b) => a.Message.CompareTo(b.Message));
    }
}