disable dropdown list item

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Hi to all,

i need to create drop-down list in asp.net with items, which display all items but some of them disable for select.

e.g

C#

public void fillDrp()
   {
       drp1.Items.Clear();
       drp1.Items.Add(new ListItem("a", "1", true));
       drp1.Items.Add(new ListItem("b", "2", true));
       drp1.Items.Add(new ListItem("c", "3", false));
       drp1.Items.Add(new ListItem("d", "4", true));
   }

this code is hiding the item "c", while i need to show this item in to list but make disable for selection.

Thanks in advance... :)
--Amit

Posted 22-Mar-10 20:02pm

am.net

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vinod malla · Accepted Answer · 2010-03-22T20:21:00

hi friend

for this type we should write a javascript like

function change()
{
var dd=document.getElementById ("<%=DropDownList1.ClientID %>;');
var value=dd.options[dd.selectedIndex].value;
if(value!=your disabled index)
{
do what you want
}
}

Christian Graus · Accepted Answer · 2010-03-22T20:13:00

Solution 1

I am pretty much certain that what you want is impossible using HTML, which means it's impossible in ASP.NET. The best you can do, is to write javascript that detects when something in your blacklist is selected, and unselected it.

Posted 22-Mar-10 20:13pm

Christian Graus