CODEWITHSUNDEEP
c#asp.netdrop-down-menu
Abbas
Abbas

Reputation: 5044

disable dropdownlist items

I want to disable every fifth item in a dropdownlist.

dropdownlist1.items[i].Attributes.Add("disabled","disabled");

How do I write the logic to disable every fifth item in a Dropdownlist?

I am using two for loops: one for displaying items and one for disabling items in dropdownlist. How can I simplify my code?

Upvotes: 3

Views: 15011

Answers (5)

Rafee
Rafee

Reputation: 4078

foreach(Control c in this.Controls)
 {
    if(c is dropdownlist)
    {
        dropdownlist dl = (dropdownlist)c;
        if (i % 5 > 0)
        {
           dl.items[i].Attributes.Add("disabled","disabled");
        }
    }
 }

Check this out! same as castirng.

findout all dropdownlist on the form and on every dropdown list it will disable.

let me know!!

Upvotes: 1

uadnal
uadnal

Reputation: 11425

Using jQuery

var count = 0;
$('select option').each(function() {
   count++;
   if(count % 5 == 0)
     $(this).attr('disabled', 'disabled'); 
}):

Upvotes: 0

Aivan Monceller
Aivan Monceller

Reputation: 4670

If what you need is like an optgroup functionality to group your options. Here is a sample of what an optgroup looks like in case you don't know http://www.w3schools.com/tags/tryit.asp?filename=tryhtml_optgroup.

There are ways to add an optgroup to a dropdown list http://weblogs.asp.net/jeff/archive/2006/12/27/dropdownlist-with-optgroup.aspx

then you could use it like this 

ListItem item = new ListItem("some group name", String.Empty);
item.Attributes["optgroup"] = "optgroup";
myDropDown.Items.Add(item);

or in your case

dropdownlist1.items[i].Attributes["optgroup"] = "optgroup";

Upvotes: 0

arnehehe
arnehehe

Reputation: 1398

Perhaps you should consider just not showing them? As in: 

if (i % 5 > 0) {
   dropdownlist1.items[i].Attributes.Add("disabled","disabled");
}

Upvotes: 3

Kon
Kon

Reputation: 27431

I googled for "disable dropdownlist items" and the first result provided the exact answers you're looking for.

It's not possible, but there are alternatives.

Upvotes: -1

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