guscanales

 try
            {
                ClientContext clientContext = new ClientContext(site);
                clientContext.Credentials = new NetworkCredential(user, pass, domain);
                Web oWebsite = clientContext.Web;
                clientContext.Load(oWebsite);
                clientContext.ExecuteQuery();

                Utils.CheckUserResults results = new Utils.CheckUserResults();
                JavaScriptSerializer json = new JavaScriptSerializer();

guscanales

InsertUser()
{
    if (projectItem["xyz"] != null)                          
    {
      SPFieldUser userField = (SPFieldUser)projectItem.Fields.GetField("xyz");
      SPFieldUserValueCollection userFieldValueCollection = (SPFieldUserValueCollection)userField.GetFieldValue(projectItem["fmMTSRep"].ToString());
        foreach (SPFieldUserValue userFieldValue in userFieldValueCollection)
        {
          this.Users.Add(userFieldValue.User)
        }