C#

<br />
public T RecursiveGetNextRandom<t>(T Max, T Min, List<t> lstExcludedNum) <br />
{<br />
	int nNextNum = 0;<br />
	double dbNextNum  0;<br />
	T NextNum;<br />
	<br />
	nMin = Convert.ToInt32(Min);<br />
	nMax = Convert.ToInt32(Max);<br />
	nNextNum = oRand.Next(nMin, nMax);<br />
	if(Max is double)<br />
	{<br />
		dbNextNum = oRand.NextDouble() * nNextNum;<br />
		NextNum = (T) dbNextNum;			<< TROUBLE: Can't cast to <t>!<br />
	} else if (Max is int) {<br />
		NextNum = (T) nNextNum;				<< TROUBLE: Can't cast to <t>!<br />
	}<br />
	<br />
	return NextNum;<br />
}<br />
</t></t></t></t>

public static object RecursiveGetNextRandom(object Max, object Min, ArrayList lstExcludedNum) <br />
{<br />
	object NextNum = 0;<br />
	Random oRand = new Random(Guid.NewGuid().GetHashCode());<br />
	double dbMin;<br />
	double dbMax;<br />
	int nNextNum;<br />
<br />
	if (Min == null)<br />
	{<br />
		Min = Int32.MinValue;<br />
	}<br />
<br />
	if (Max == null)<br />
	{<br />
		Max = Int32.MaxValue;<br />
	}<br />
	<br />
	if (!(Max is int || Max is double))<br />
	{<br />
		...<br />
	}<br />
	<br />
	dbMin = Convert.ToInt32(Min);<br />
	dbMax = Convert.ToInt32(Max);<br />
	SwapIfGreater(ref dbMin, ref dbMax);<br />
	nNextNum = oRand.Next(Convert.ToInt32(Math.Floor(dbMin)), Convert.ToInt32(Math.Floor(dbMax)));<br />
<br />
	if (Max is double)<br />
	{<br />
		NextNum = (double)nNextNum * oRand.NextDouble();<br />
	}<br />
	else if (Max is int)<br />
	{<br />
		NextNum = (int)nNextNum;<br />
	}<br />
	<br />
	if (lstExcludedNum != null)<br />
	{<br />
		if (lstExcludedNum.Contains(NextNum))<br />
		{<br />
			RecursiveGetNextRandom(Max, Min, lstExcludedNum);<br />
		}<br />
	}<br />
<br />
	return NextNum;<br />
}<br />

private void bookList_Load(object sender, EventArgs e)
        {
            BLL = new BooksBLL("C");            
            dataGridView1.DataSource = BLL.allBooks();
            if (isEdit)
            {
                PopulateList();
            }                       
        }

private void PopulateList()
        {
            foreach (OrderedBook ob in order.MyOrderedBooksCollection)
            {
                for (int i = 0; i < dataGridView1.Rows.Count; i++)
                {
                    if (ob.BookCode.ToString() == dataGridView1.Rows[i].Cells[2].Value.ToString())
                        if (ob.CopiesOrdered > 0)
                            dataGridView1.Rows[i].Cells[0].Value = ob.CopiesOrdered.ToString();
                }
            }
        }