Sorting Data in dropdownlist

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C#

object[] SortedItems = new object[DropDownList1.Items.Count];
for (int i = 0; i < SortedItems.Length; i++)
{
SortedItems[i] = DropDownList1.Items[i];
}
Array.Sort(SortedItems);
DropDownList1.Items.Clear();
DropDownList1.Items.AddRange(SortedItems);

In the above code I copied items in DropDownList to ArrayList, I sorted the ArrayList, cleared the DropDownList.

I could not add the sorted items to the DropDownList.

Thanks in advance.

Posted 2-Mar-12 19:13pm

Ravi shekahr

Updated 2-Mar-12 23:38pm

André Kraak

v2

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André Kraak 3-Mar-12 5:38am

Edited question:
Added pre tags

Sergey Alexandrovich Kryukov 3-Mar-12 21:17pm

Don't use obsolete ArrayList, it is non-generic; such type were rendered obsolete by v.2.0.
--SA

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psgviscom · Answer 1 · 2012-03-02T19:18:00

Solution 1

Refer this link. It will help you.
Sorting Dropdown list in ASP.NET using C#[^]

Posted 2-Mar-12 19:18pm

psgviscom

Comments

Ravi shekahr 3-Mar-12 1:23am

when data come from database then ????

psgviscom 3-Mar-12 1:55am

Use orderby in your database
refer this link
http://dev.mysql.com/doc/refman/5.0/en/order-by-optimization.html

Ravi shekahr 3-Mar-12 2:21am

i tried that code but not working .please help me

psgviscom 4-Mar-12 23:41pm

Try my another solution.(solution3)

Career Web Helper · Answer 2 · 2012-03-02T19:54:00

Solution 2

Refer following links for diff. solutions
using LINQ:
http://www.dotnetcurry.com/ShowArticle.aspx?ID=312[^]
or solution1 or refer
Sort Method for an ASP.NET DropDownList[^]
or use ddlId.Sorted=True; if u r binding that DDL

Posted 2-Mar-12 19:54pm

Career Web Helper

psgviscom · Answer 3 · 2012-03-04T16:54:00

Refer this links.
This shows how to give dropdown's datasource as database.
http://www.dbtutorials.com/advanced/populatingdropdown-csharp.aspx[^]

This link shows how to sort data in dropdownlist.
http://abhijitjana.net/2010/08/08/how-to-sort-asp-net-dropdownlist-based-on-datavaluefield-or-datatextfield-using-linq/[^]

Combine these two and write your code.
Hope this helps you.

All the best.