System.Collections.Specialized.NameValueCollection.GetAsOneString C# (CSharp) Method

        private static String GetAsOneString(ArrayList list)
        {
            int n = (list != null) ? list.Count : 0;

            if (n == 1)
            {
                return (String)list[0];
            }
            else if (n > 1)
            {
                StringBuilder s = new StringBuilder((String)list[0]);

                for (int i = 1; i < n; i++)
                {
                    s.Append(',');
                    s.Append((String)list[i]);
                }

                return s.ToString();
            }
            else
            {
                return null;
            }
        }

 public virtual string Get(int index)
 {
     return(NameValueCollection.GetAsOneString((ArrayList)this.BaseGet(index)));
 }