Any ideas on how to append an asp.net drop down list?

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Hi There,

I am trying to append databound items to my drop down list. The appending part seems to work find, however when the drop down list is being appended new items do get added to the list but the older items that were there are still seem to be staying in the list.

I have 2 drop down lists, one for database name which passes a variable to a stored procedure in sql so that it brings back a list of data to populate the drop down list that needs to be appended.

So for eg. if i select item A from down list 1 then drop down list 2 should be populated with items only for item A from drop down list one. At the moment it just keeps adding data instead of it being specific to the first drop down list.

thanks.

Posted 6-Mar-13 21:02pm

Kats2512

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3 solutions

Solution 1

You are probably adding items after it is bound.
You can use

C#

DropDownList1.Items.Clear();

to remove all items from the drop down list before you add any.

Show us your code and we will be able to help better.

Posted 6-Mar-13 21:15pm

Ankur^\m/

Solution 4

You can use this :

ddlAgentName.Items.Clear();
ddlAgentName.DataSource = DTBND.GetAgents(ddlDatabaseName.SelectedValue)
ddlAgentName.DataBind()

Posted 7-Mar-13 2:51am

Syed Ali Raza

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Sanjeev236 · Accepted Answer · 2013-03-06T21:18:00

Solution 2

simply Clear all the item from dropdownlist before appending.
1. Dropdownlist1.item.clear();

Than add new items:
2. Dropdownlist1.item.add("item_name");

Posted 6-Mar-13 21:18pm

Sanjeev236