publicstringmd5(stringstr,intcode)
{
if(code==16)//16位MD5加密（取32位加密的9~25字符）
{
returnSystem.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str,"MD5").ToLower().Substring(8,16);
}
else//32位加密
{
returnSystem.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str,"MD5").ToLower();
}
}