private string ReadSystemClassID(string taobaoClassIDList)
{
string str = string.Empty;
if (taobaoClassIDList != string.Empty)
{
foreach (string str2 in taobaoClassIDList.Split(new char[] { ',' }))
{
if (str2 != string.Empty)
{
ProductClassInfo info = ProductClassBLL.ReadProductClassCacheByTaobaoID(Convert.ToInt64(str2));
if (info.FatherID == 0)
{
str = str + "|" + info.ID.ToString() + "|";
}
else
{
string str4 = str;
str = str4 + "|" + info.FatherID.ToString() + "|" + info.ID.ToString() + "|";
}
}
}
}
return(str);
}