C#

DatTbl = CustomerManger.SelectCustomersAllDT(); //dattbl is datatable
            ds.Tables.Add(DatTbl);  //ds is dataset
            DatTbl.TableName = "Customers";
            dgvCustomers.DataSource = null;
            dgvCustomers.DataSource = ds;
            dgvCustomers.DataMember = "Customers";

private void dgvCustomers_SelectionChanged(object sender, EventArgs e)
{
NoticList NL=NoticeManager.SelectNoticesbyCustCD(newCust.CustId);  
}                

List<String> dep = new List<String>();
        foreach (ListItem item in sltnamedep.Items)
        {

            if (item.Selected)
            {


                
                dep.Add(item.Text);


            }

        }
        for (int i = 0; i < dep.Count; i++)
            Response.Write(dep[i]);

List<PositionValues> list = new List<PositionValues>();
 PositionValues item1 = new PositionValues();
 item1.Position = 2;
 item1.Value = 44;
 list.Add(item1);

 PositionValues item2 = new PositionValues();
 item2.Position = 1;
 item2.Value = 33;
 list.Add(item2);

 var resultList = from b in list group b by b.Position into g orderby b.Value select b;

public struct PositionValues
{
    /// <summary>
    /// The position.
    /// </summary>
    public int Position;

    /// <summary>
    /// The position.
    /// </summary>
    public double Value;
}