Multiple selection of ListBox is not working in asp.net mvc4

Question

I have bound listbox data from entity framework. I have selected multiple values in that listbox. But, the values are not fired. The count of the property is 0 only. I am using the code below:

public class Sample1  
{  
[Key]  
public int SampleId{ get; set; }  
public string SampleDesc{ get; set; }  
}
public class ExpModel  
{  
public List<Sample1> Sample{ get; set; }  
}
public ActionResult Index()  
{       
ViewData["SampleList"] = new List<Sample1>(entity.samp);  
return View();  
} 
@Html.ListBoxFor(model => model.Sample, new  SelectList(((List<Details.Models.Sample1>)ViewData["SampleList"]), "SampleId", "SampleDesc"))

What do I have to do? Please help me...

Please post your Model and your Controller Action.

ataravati
– ataravati

2013-08-07 14:19:45 +00:00
Commented Aug 7, 2013 at 14:19 — ataravati
– ataravati, Commented Aug 7, 2013 at 14:19

Darin Dimitrov · Accepted Answer · 2013-08-08 06:15:58Z

0

You should bind the ListBoxFor helper to a property that is a collection of simple/scalar values such as strings or integers:

public class Sample1  
{  
    [Key]  
    public int SampleId { get; set; }  
    public string SampleDesc { get; set; }  
}

public class ExpModel  
{  
    public List<int> SelectedSampleIds { get; set; }  
}

and then:

public ActionResult Index()  
{       
    ViewData["SampleList"] = new List<Sample1>(entity.samp);
    return View();  
}

and in your view:

@Html.ListBoxFor(
    model => model.SelectedSampleIds, 
    new SelectList(
        (List<Details.Models.Sample1>)ViewData["SampleList"], 
        "SampleId", 
        "SampleDesc"
    )
)

Now when you submit the form, the SelectedSampleIds collection will contain the selected ids in the list box.

answered Aug 8, 2013 at 6:15

Darin Dimitrov

1.0m277 gold badges3.3k silver badges3k bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Multiple selection of ListBox is not working in asp.net mvc4

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related