C#

using System;
using System.Collections;

public class MyClass
{
    // enum MUST must have fewer entries than the width of an int - 1,
    // i.e. a maximum of 31 or 63 depending on CPU, but to be honest any more
    // than 16 is just silly!

    [Flags]
    enum testEnum
    {
        In,
        Out,
        Over,
        Hover
    }

    static void Main (string[] args) 
    {
        string[] names = Enum.GetNames (typeof (testEnum));
        ArrayList[] list = GetCombinations (names);

        foreach (ArrayList items in list)
            for (int i = 0, last = items.Count - 1; i <= last; i++)
                Console.Write (items [i] + (i < last ? ", " : "\n"));

        Console.ReadLine();
    }

    static ArrayList[] GetCombinations (string[] a)
    {
        int count = TwoPow (a.Length) - 1;
        ArrayList[] list = new ArrayList [count];

        for (uint i = 1; i <= count; i++)
        {
            ArrayList items = new ArrayList();

            for (uint j = 0, bits = i; bits != 0; j++, bits >>= 1)
                if ((bits & 1) != 0)
                    items.Add (a [j]);

            list [i - 1] = items;
        }
        
        return list;
    }

    static int TwoPow (int e)
    {
        int p = 1;
        for (int i = 0; i < e; i++)
            p <<= 1;

        return p;
    }
}

public class Table
{
  static ArrayList list;
  public static string GetListFromIndex(int i){return (string)list[i];}
}

private void dgMouseMove(object sender, System.Windows.Forms.MouseEventArgs e)<br />
{			<br />
System.Windows.Forms.DataGrid.HitTestInfo hitInfo = dg.HitTest(new Point(e.X, e.Y));<br />
if (hitInfo.Row < tCat.Rows.Count && hitInfo.Row > -1)<br />
{<br />
dg.CurrentCell = new DataGridCell(hitInfo.Row,hitInfo.Column);<br />
DataGridCell dc = dg.CurrentCell;<br />
string txt = dg[dc].ToString();<br />
if (txt.Length > 10){ 

 }<br />
}<br />
}

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