C#

zead wrote:

Please How I Can Do That??

TextBox txt = new TextBox();
...
this.Controls.Add(txt);

E_Gold wrote:

Is anyone know some good Web sit's ?

Client clientA = new Client(1);
Client clientB = new Client(2);
Client clientC = new Client(3);
ClientCollection clients = new ClientCollection();
clients.Add(clientA);
clients.Add(clientB);
clients.Add(clientC);
foreach(IItem item in clients)
{
    Console.WriteLine(item.ID);
}
/* alternative
foreach(Client client in clients)
{
    Console.WriteLine(client.ID);
}*/

public interface IItem
{
    Int32 ID { get; set; }
}

public interface ICollection : IList<IItem>
{ }

public class Client : IItem
{
    public Client(Int32 id)
    {
        ID = id;
    }

    #region IItem Members

    public int ID
    {
        get;
        set;
    }

    #endregion
}

public class ClientCollection : ICollection
{
    private List<IItem> list;

    public ClientCollection()
    {
        list = new List<IItem>();
    }

    #region IList<IItem> Members

    public int IndexOf(IItem item)
    {
        return list.IndexOf(item);
    }

    public void Insert(int index, IItem item)
    {
        list.Insert(index, item);
    }

    public void RemoveAt(int index)
    {
        list.RemoveAt(index);
    }

    public IItem this[int index]
    {
        get { return list[index]; }
        set { list[index] = value; }
    }

    #endregion

    #region ICollection<IItem> Members

    public void Add(IItem item)
    {
        list.Add(item);
    }

    public void Clear()
    {
        list.Clear();
    }

    public bool Contains(IItem item)
    {
        return list.Contains(item);
    }

    public void CopyTo(IItem[] array, int arrayIndex)
    {
        list.CopyTo(array, arrayIndex);
    }

    public int Count
    {
        get { return list.Count; }
    }

    public bool IsReadOnly
    {
        get { return false; }
    }

    public bool Remove(IItem item)
    {
        return list.Remove(item);
    }

    #endregion

    #region IEnumerable<IItem> Members

    public IEnumerator<IItem> GetEnumerator()
    {
        return list.GetEnumerator();
    }

    #endregion

    #region IEnumerable Members

    System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
    {
        return GetEnumerator();
    }

    #endregion
}