How to set a string field with people picker control group

Question

Hi Guys
I have a problem with a form list, when I need to set a string field with de content of people picker control that have more than one "user".
Is there any way to put in string a list of user like the people picker control shows in a form?
The really problem is I don't know how to read an array of user in a formula rule.
any example or idea should be appreciated.
tnks.

Answer 1

Hi ,
Please try out in following way :
        /// <summary>
        /// Set value to people picket control
        /// </summary>
        /// <param name="key"></param>
        /// <param name="ppl"></param>
        /// <param name="item"></param>
        private void SetDatatoPeopleEditor(string key, PeopleEditor ppl, SPListItem item)
            try
                if (item[key] != null)
                    string users = string.Empty;
                    SPFieldUserValueCollection userCol = new SPFieldUserValueCollection(web, item[item.Fields.GetField(key).Id].ToString());
                    foreach (SPFieldUserValue usrItm in userCol)
                        users += usrItm.User.ToString() + ",";
                    ppl.CommaSeparatedAccounts = users.Remove(users.LastIndexOf(","), 1);
            catch (Exception ex)
                lblErrorMessage.Text = ex.Message;
private SPUser GetAccountName(PeopleEditor accountPE)
            SPUser user = null;
            string strAccountName = String.Empty;
            try
                for (int i = 0; i < accountPE.ResolvedEntities.Count; i++)
                    PickerEntity objEntity = (PickerEntity)accountPE.ResolvedEntities[i];
                    user = web.AllUsers[objEntity.Key];
                return user;
            catch (Exception ex)
            return user;
It works for me .