How can I achieve the result of a list?

I have a program which returns system.collections.generic.list 1 system.object

I have tried several times to return the actual value of this parameter and to change it according to what I found in google but it does not work for me.

What I'm trying to do is use Linq to get the value of a list:

Response[] resp = db.GetResponse();

for (int i = 0; i < resp.Length; ++i)
{
    int userIDindex = -1;
    int fnIndex = -1;
    int lnIndex = -1;

    if (resp.Length > 0)
    {
        // the first record contains the names of the fields
        for (int j = 0; j < resp[i].List.Length; j++)
        {
            if (resp[i].List[j].ToString() == "Q9Row1")
                userIDindex = j;
            else if (resp[0].List[j].ToString() == "SubjectID")
                lnIndex = j;

        }

         if (userIDindex >= 0)
        {
            for (int k = 1; k < resp.Length; k++)
            {
                var userData = resp[k].List;

                List<string> toEmailAdresses = new List<string>();
                string fromEmailAddress = "";
                string bodyMessage = "";

                List<string> projectId = new List<string>();

                int count = xml.GetElementsByTagName("toEmailAdresses").Count;

                for (int t = 0; t < count; ++t)
                {
                    {
                        while ((userData[userIDindex].ToString().Equals("3", StringComparison.CurrentCultureIgnoreCase) ||
                        userData[userIDindex].ToString().Equals("4", StringComparison.CurrentCultureIgnoreCase))) //&&
                        {    
                            if (userData[userIDindex].ToString().Equals("3", StringComparison.CurrentCultureIgnoreCase) ||
                            userData[userIDindex].ToString().Equals("4", StringComparison.CurrentCultureIgnoreCase))
                            {
                                toEmailAdresses.Add(xml.GetElementsByTagName("toEmailAdresses")[t].InnerText);
                                bodyMessage = xml.GetElementsByTagName("bodyMessage").ToString();
                                MailMessage mail = new MailMessage("[email protected]", toEmailAdresses[t].ToString());
                                SmtpClient client = new SmtpClient();
                                client.Port = 25;
                                client.DeliveryMethod = SmtpDeliveryMethod.Network;
                                client.UseDefaultCredentials = false;
                                client.Host = "localhost"; //here goes the smpt connection
                                mail.Subject = "Testing email";     
                                mail.Body = bodyMessage[t] + "___" + userData[lnIndex].ToString().Select(r => r.ToString() == "SubjectID").ToList();
                                client.Send(mail);               
                            }
                        }
                    }
                }
            }
        }
    }
}

This is what I get from the resp list:

<Response>
    <List>
        <anyType xsi:type="xsd:string">Q9Row1</anyType>
        <anyType xsi:type="xsd:string">Q9Comment1</anyType>
        <anyType xsi:type="xsd:string">Q10Row1</anyType>
        <anyType xsi:type="xsd:string">Q10Comment1</anyType>
        <anyType xsi:type="xsd:string">Q11Row1</anyType>
        <anyType xsi:type="xsd:string">SubjectID</anyType>

    </List>
</Response>
<Response>
    <List>
        <anyType xsi:type="xsd:string">1</anyType>
        <anyType xsi:type="xsd:string">2</anyType>
        <anyType xsi:type="xsd:string">2</anyType>
        <anyType xsi:type="xsd:string">1</anyType>
        <anyType xsi:type="xsd:string">1</anyType>
        <anyType xsi:type="xsd:string">user1</anyType>
    </List>
</Response>

What I'm looking for is the value of SubjectID from the list.

How can I achieve this?

Thanks in advance