How to remove listbox items which are not exits in another listbox in VB.NET

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How we can remove the listbox items which are not exists in another listbos?

I have given an example here....

ListBox1 items are....

One
Two
Three
Four

ListBox2 items are....

One
Two
Three
Four
Five
Six

Please note that, items "Five" and "Six" in ListBox2 are not exists in ListBox1. So, these two should be deleted.

So, please guide me in this regard.
Ashu

Posted 23-Nov-12 4:57am

Member 8197122

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[no name] 23-Nov-12 11:02am

Try to check each items of ListBox1 with each items of ListBox2..

Member 8197122 23-Nov-12 12:41pm

Mr.Krunal,

Thanks for your early reply. As you said I tried to do. But not able to do. And got an idea about the removing the items which are matching. But not able to figure it out to remove which are not matching. If you could send me the example code I will ge obliged to you. Thanks in advance

Richard MacCutchan 23-Nov-12 11:47am

This is a simple piece of homework that you should be able to do yourself. Figure out how you would do it with two lists written on pieces of paper and then convert that into the relevant code.

Member 8197122 23-Nov-12 12:44pm

Mr.Richard,

Can you reply with some example code. Since its getting very difficulty for me to figure it out. If you could it will help me lot.

Member 8197122 23-Nov-12 14:28pm

the code which you have given is showing error. Please give me the correct one

Member 8197122 26-Nov-12 0:48am

Sir..the code which have suggested me is not working . so, will it be possible to suggest me in detail.

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Richard MacCutchan · Answer 1 · 2012-11-23T06:49:00

Solution 1

for each item in ListBox2
  if not item exists in ListBox1
  then
    delete item
  endif
endfor

The ListBox documentation[^] will help you figure out the rest.

Posted 23-Nov-12 6:49am

Richard MacCutchan