View ListBoxFor healper data from Grid in MVC

Question

I want to view data in listbox after click on view  button in Grid.other value got except ListBox value, 

 

 View:-

<div class="form-group col-xs-6 col-sm-6">

@Html.ListBoxFor(x => x.SelectedNames, Model.Names, new { Size = 20, style = "width:190%;" })

</div>

 

<div class="form-group col-xs-6 col-sm-6">

@Html.ListBoxFor(model => model.SelectedNames, new MultiSelectList("",Model.SelectedNames), new { Size = 20, style = "width:190%;" })

</div>

Controller:-

public ShiftNameViewModel ViewPatternById(int inPtnId)

{

try

{

if (inPtnId > 0)

{

tblMstPattern_PTN PatternDetail = db.tblMstPattern_PTN.Find(inPtnId);

tblTxnPatternData_PTD_T txnPatternDetail = db.tblTxnPatternData_PTD_T.Find(inPtnId);

var patternValue = new ShiftNameViewModel()

{

inPtnId = PatternDetail.inPtnId,

vcPtnCode = PatternDetail.vcPtnCode,

vcPtnName = PatternDetail.vcPtnName,

SelectedNames = PatternDetail.vcPtnData.Split(new char[] { ',' }).ToList()

};

return patternValue;

}

}

catch (Exception ex) { ex.Message.ToString(); }

return null;

}

 

 

 

In viewModel :

 

public IEnumerable<SelectListItem> Names { get; set; }

public IEnumerable<string> SelectedNames { get; set; }