Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

C #.Net Windows application Transferring ListBox items to another ListBox

Posted on 2006-10-21
5
Medium Priority
?
206 Views
Last Modified: 2010-04-16
Hello,
I have a listbox that stores items and I have another listbox which is empty. In the middle of these listboxes I have a button names ADD. I have created an array for the items stored in the first listbox. I would like to transfer the items stored in the 1st listbox to the 2nd listbox when the item is seleceted and the ADD button is pressed.
string[] strSubs;
strSubs = new string[]{"English", "Maths", "Soscial Sciences", "Physics",};

Thanks in advance,
Erdem
0
Comment
Question by:operatortobe
  • 4
5 Comments
 
LVL 29

Expert Comment

by:Nightman
ID: 17780118
you don't need the array. Simply place this in the onclick event of the button

   
      foreach (object o in comboBox1.Items)
      {
        comboBox2.Items.Add(o.ToString());
      }
0
 
LVL 29

Expert Comment

by:Nightman
ID: 17780125
Sorry, I misread your question

add this in the onclick event handler
      comboBox2.Items.Add(comboBox1.SelectedItem.ToString());
0
 
LVL 29

Accepted Solution

by:
Nightman earned 1000 total points
ID: 17780127
My first post will add EVERTYTHING
My second will add only the selected item
0
 

Author Comment

by:operatortobe
ID: 17780572
Hi there,
I just had a chance to check the adding items from listbox1 to listbox2. It works fine, however if the user doesn't choose ant item from the listbox1 and just hits the ADD button I get this following message;

"NUll Reference exception was not handled"
lstChosenSubs.Items.Remove(lstChosenSubs.SelectedItem.ToString());

I guess I need to use the try and catch to handle this exception,right? Any idea how should I use it?
Regards,
0
 
LVL 29

Expert Comment

by:Nightman
ID: 17780833
Yes - check the value of the SelectedIndex - if -1 then there is nothing selected - simply do nothing.
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: Najam
Having new technologies does not mean they will completely replace old components.  Recently I had to create WCF that will be called by VB6 component.  Here I will describe what steps one should follow while doing so, please feel free to post any qu…
Introduction Hi all and welcome to my first article on Experts Exchange. A while ago, someone asked me if i could do some tutorials on object oriented programming. I decided to do them on C#. Now you may ask me, why's that? Well, one of the re…
This course is ideal for IT System Administrators working with VMware vSphere and its associated products in their company infrastructure. This course teaches you how to install and maintain this virtualization technology to store data, prevent vuln…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…

972 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question