/// <summary>
/// Creates a random number string of length length
/// </summary>
/// <param name="length">The length of the string to be generated</param>
/// <returns>A random number string of length length</returns>
public static string createRandomNumberString(int length)
{
string result;
Random random = new Random(DateTime.Now.Millisecond);
for (result = ""; result.Length < length; result += random.Next(0, 9)) ;
return result;
}