How to remove the Listbox Items which does not not exists in another List Box

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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 25-Nov-12 18:44pm

Member 8197122

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BC @ CV · Answer 1 · 2012-11-26T12:01:00

You could also do this if you prefer a less imperative approach.

C#

C#

(from object item in listBox2.Items
 where !listBox1.Items.Contains(item)
 select item).ToList().ForEach(x=>listBox2.Items.Remove(x));

VB

(From item In listBox2.Items Where Not listBox1.Items.Contains(item)item).ToList().ForEach(Function(x) listBox2.Items.Remove(x))

kareem salem · Answer 2 · 2012-11-25T21:12:00

Solution 1

try this

C#

for (int i = 0; i <listBox2.Items.Count ; i++)
         {
             object item = listBox2.Items[i];
             if (!listBox1.Items.Contains(item))
             {
                 listBox2.Items.Remove(item);
                 i--;
             }
         }

Posted 25-Nov-12 21:12pm

kareem salem

Updated 25-Nov-12 21:30pm

v3

Comments

T.D.V.Anil 10-Dec-12 5:25am

How we can remove the listbox items which already in another listbox?

I have given an example here....

ListBox1 items are....

One
Two
Three
Four

ListBox2 items are....

One
Two

Please note that, items "Five" and "Two" in ListBox2 are alresy exist in ListBox1. So, these two in listbox1 should be deleted.

So, please guide me in this regard.
Anil.

can you people plz help me in this,if any answers plzz mail it to tdv.anil4u@gmail.com