How to get the row number from a datatable?

Question

I am looping through every row in a datatable:

foreach (DataRow row in dt.Rows) {}

I would like to get the index of the current row within

Answer 1

ArrayList check = new ArrayList();            

for (int i = 0; i < oDS.Tables[0].Rows.Count; i++)
{
    int iValue = Convert.ToInt32(oDS.Tables[0].Rows[i][3].ToString());
    check.Add(iValue);

}