Reading and writing to Windows.Registry.

using System.Configuration;
using System.Web.Security;
using System.ComponentModel;
using System.Diagnostics;
using System.Configuration.Install;
using Microsoft.Win32;
 
namespace Install.NameSpace
{
    [RunInstaller(true)]
    public class InstallHelper : Installer
    {
 
    #region Public Static Methods
 
    public static void SaveLocalRoot(String value)
    {
        try
        {
            RegistryKey key = Registry
                .LocalMachine.OpenSubKey(ConfigurationManager
                .AppSettings["LocalRootRegKey"]
                .ToString(), true);
            if (key == null)
            Registry.LocalMachine.CreateSubKey(ConfigurationManager
                .AppSettings["LocalRootRegKey"].ToString());
            key.SetValue("DefaultLocalRoot", value);
        }
        catch (Exception e)
        {
            throw e;
        }
    }
 
    #endregion
 
    }
} 

XML Serialization and Deserialization in .NET

/// <summary>
/// Serialize
/// </summary>
/// <param name="clientList">List of objects</param>
/// <returns>success/fail (bool)</returns>
private static bool SaveClientAttributes(List clientList)
{
    try
    {
        XmlSerializer serializer = new XmlSerializer(typeof(List));
        StreamWriter writer =
        new StreamWriter((Server.MapPath(string.Empty)) 
            + "\\ClientData.xml");
        List ClientList = new List();
        serializer.Serialize(writer, clientList);
        return true;
    }
    catch (Exception ex)
    {
        return false;
    }
 
}
/// <summary>
/// Deserialize
/// </summary>
/// <returns>List of objects</returns>
private static List LoadClientAttributes()
{
    List clientList = new List();
    try
    {
        XmlSerializer serializer = new XmlSerializer(typeof(List));
        FileStream fileStream =
        new FileStream((Server.MapPath(string.Empty))
            + "\\ClientData.xml", FileAccess.Read);
        clientList = (List)serializer.Deserialize(fileStream);
    }
    catch (Exception ex)
    {
        //Do nothing
    }
    return clientList;
}

List.IndexOf(Object o) .NET 3.0

this.ddlCourier.SelectedIndex = affiliatecouriers.IndexOf(affiliatecouriers
        .Find(delegate(Courier courier)
        {
            return courier.ID ==
                int.Parse(iOrder.Supplementary.DeliveryCode);
        }));

References http://msdn2.microsoft.com/en-us/library/x0b5b5bc.aspx

Overriding Index of a Generic List

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
namespace Application.DomainModel.Collections
{
    public class Couriers<Courier> : List<Courier>
    {
        public Courier this[string courierCode]
        {
            get
            {
                return this.Find(delegate(Courier courier)
                { return (string.Compare(courier.CourierCode, courierCode) == 0); });
            }
        }
    }
    public class Courier
    {
        public string CourierCode { get; set; }
    }
}

ORA-24338: statement handle not executed

This happens when you try to read a cursor after fetching data from it. Try to read the cursor before you fetch data from it

PROCEDURE GetAffiliateCouriers(paffiliate_id number, io_cursor IN OUT appCursor)
IS
vcursor appCursor; tcursor appCursor; retCursor appCursor;
affiliate_id INTEGER; t_allow_courier_selection INTEGER;
v_row AFFILIATE%ROWTYPE; t_row AFFILIATE_COURIER%ROWTYPE;
BEGIN
vcursor := NULL;
tcursor := NULL;
affiliate_id := paffiliate_id;
LOOP
OPEN vcursor FOR SELECT * FROM affiliate WHERE id = affiliate_id AND allowcourierselection = 1;
FETCH vcursor INTO v_row;
IF (vcursor%FOUND) THEN
OPEN tcursor FOR SELECT * FROM affiliate_courier WHERE affiliate_courier.fk_affiliate_id = affiliate_id;
FETCH tcursor INTO t_row;
IF (tcursor%FOUND) THEN
OPEN retCursor FOR SELECT * FROM affiliate_courier WHERE affiliate_courier.fk_affiliate_id = affiliate_id;
io_cursor := retCursor;
RETURN;
END IF;
END IF;
SELECT fk_parent_id INTO affiliate_id FROM affiliate WHERE affiliate.id = affiliate_id;
EXIT WHEN affiliate_id IS NULL;
END LOOP;
io_cursor := retCursor;
END GetAffiliateCouriers;