public string GetMailboxPlans(string organization, string selectedvalue) { string ret = ""; using (MyPowerShell ps = new MyPowerShell()) { ps.GetMailboxPlans(organization); var result = ps.Invoke(); foreach (var item in result) { if (selectedvalue == item.ToString()) { ret += "<option selected=\"selected\">" + item.ToString() + "</option>"; } else { ret += "<option>" + item.ToString() + "</option>"; } } } return(ret); }