Sr Denis Georgiev, maybe not clearly with my questions, let me tell you more details, I have a small app manage profiles students (asp mvc), when I create a new profile: I can load all data combobox and allow user select state or country, but this is my problem when edit a profile I can't set selected values for combo country/state which I had been choosen before.

this is link to my code: https://www.fshare.vn/file/454TL96S9KT6

Hello Quang,

Please provide sample replicating your issue.

Tk Denis Georgiev I can load all data for combobox but I have problem when set select item for combobox.

I can't used method .SelectedIndexes(int[]) it have error Error    9    'Infragistics.Web.Mvc.ComboWrapper' does not contain a definition for 'SelectedIndexes' and no extension method 'SelectedIndexes' accepting a first argument of type 'Infragistics.Web.Mvc.ComboWrapper' could be found.

And how to use Html.Infragistics().ComboFor() at mvc view, I have some code below

class PersonModels

{

string Fullname {get;set;}
string CityID {get;set;}

...

}

if string someone person CityID has values 2 how to set selected item when I load all combobox city with city name & values

I use Dapper with return detail of someone person like this

[repository]

 public List<PersonModels> Details(string id)
     {
          
          
            var p = new DynamicParameters();
            
            p.Add("PersonID", id);
            IList<PersonModels> person = SqlMapper.Query<PersonModels>(cn, "proc_TS_ThongTinTuyenSinhLoadByPrimaryKey", p, commandType: CommandType.StoredProcedure).ToList<PersonModels>();

            return person.ToList();

        }

how to set selected item for combobox city from Person CityID value

Hello Quang,

You can use .SelectedIndexes(int[]), where the method takes as argument array of integers.

Thank you for your answer, but how can I set selected item of combobox when load data from database