private static void AddItem(StringBuilder sb, string key, params string[] values)
{
bool encNeeded = false;
StringBuilder tmp = new StringBuilder();
foreach (string value in values)
{
if (tmp.Length > 0)
{
tmp.Append(";");
}
if (value == null)
{
continue;
}
tmp.Append(EncodingUtils.EncodeQuotedPrintable(value, VcardEncoding, ref encNeeded));
}
sb.Append(key);
if (encNeeded)
{
sb.Append(";ENCODING=QUOTED-PRINTABLE;CHARSET=");
sb.Append(VcardEncoding.BodyName.ToUpper());
}
sb.Append(":");
sb.AppendLine(tmp.ToString());
}