473,387 Members | 1,501 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,387 software developers and data experts.

ListBox (WebControls)

mg
How can I remove (using C#) the items previously added to a System.Web.UI.WebControls.ListBox
Nov 18 '05 #1
1 1422
To remove all the items, use the following:

foreach(ListItem item in ListBox1.Items)
{
ListBox1.Items.Remove(item);
}
If your just wanting to remove a single item you can use the following:

ListBox1.Items.RemoveAt(n); where n is the index of the item you want to
remove.
If you don't know the index of the item, then you can use:

ListItem item = ListBox1.Items.FindByValue(foo); where foo is a string
representing the value you're looking for.
ListBox1.Items.Remove(item);
or;
ListItem item = ListBox1.Items.FindByText(foo); where foo is a string
representing the text you're looking for.
ListBox1.Items.Remove(item);

Of course, replace "ListBox1" with the name of your ListBox control.

David Young

"mg" <mg@theworld.com> wrote in message
news:D7**********************************@microsof t.com...
How can I remove (using C#) the items previously added to a

System.Web.UI.WebControls.ListBox
Nov 18 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

2
by: mathieu cupryk | last post by:
I have problems with listboxes in the webform2.cs, the textboxes are working well when I do a click on next. I am missing something. It works with the textboxes. Here is the file: using System;...
0
by: bill yeager | last post by:
Duray, it helps in regards to knowing how to get the items that were selected in the lisbox, but I'm going in reverse --- after I get the items from the db that were selected, I'd like to be able...
10
by: yop | last post by:
All When I try to get the text from my listbox I am get an error which is listed below. Any ideas? Thanks Object reference not set to an instance of an object.
1
by: Edward | last post by:
I am having a terrible time getting anything useful out of a listbox on my web form. I am populating it with the results from Postcode lookup software, and it is showing the results fine. What...
3
by: Joey | last post by:
Hi, I'm trying to add a default item to my listbox but when I do it tells me that it's not defined, could someone tell me the syntax I need to use to get the listbox control to display a default...
4
by: Bob P. | last post by:
Hello, I have a page with: * two side-by-side asp:listboxes and two arrow asp:buttons allowing users to add/remove email addresses between them -- very much like Outlook, where you have the...
3
by: Raja | last post by:
I have a datagrid, it has dropdown box as a column and i have one more column that has hyperlink. The NavigateURL for the hyperlink is to open a new window with a query stirng parameter as the...
7
by: 00_ChInkPoIntD12 | last post by:
Can anyone confirm there isn't a Sort() method for WebControl Listbox in Asp.net? It is rather simple to write a method to do the sorting, but just wondering I shouldn't invent the wheel if...
1
by: JMann101 | last post by:
I am writing a ASP.NET(VB) application and am having some trouble. I have a datagrid which list users and when an admin clicks "edit" a defined column becomes visible and a dynamic listbox control...
6
by: Paul | last post by:
Hi All, Framework 1.1 listbox control unable to DataBind I've been googling for an answer to this query that appears quite a lot, but none, it seem, answers my problem directly. I am...
0
by: taylorcarr | last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: aa123db | last post by:
Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.