public string Build_p28_amt_tran_fee(int amount2, string fix = "D")
{
string amt = amount2.ToString();
if (amt.Length > 8)
{
throw new Exception("Invalid Format");
}
fix = _helper.BuildStringMessageHexString(fix);
if (amt.Length < 8)
{
amt = amt.PadLeft(8, '0');
}
string sBM = amt.Substring(amt.Length - Math.Abs(amt.Length), Math.Abs(amt.Length));
string result = fix + sBM;
return(result);
}
