Copy items to another combobox?

[james]

Hi,
I am trying to duplicate the contents of a combobox to another.
I tried:

cmbBoxA.Items.AddRange(cmbBoxB.Items);

but it says it can't convert a combobox objectcollection[] to object[].

I tried putting (Object[]) in front of the addrange parameter but get a
similar error.
Any idea? I did something similar with a ListView and it worked fine...

James.

 

[DeveloperX]

This works, although I don't know if it's optimal.

comboBox1.Items.Add("an item");
object[] a= new object[comboBox1.Items.Count];
comboBox1.Items.CopyTo(a,0);
comboBox2.Items.AddRange(a);

 

[james]

This works, although I don't know if it's optimal.

comboBox1.Items.Add("an item");
object[] a= new object[comboBox1.Items.Count];
comboBox1.Items.CopyTo(a,0);
comboBox2.Items.AddRange(a);

I'll give it a try - there won't be too many items, so optimal isn't too
much of a worry.

I also lied - copying listview items like that doesn't work! It compiles,
but at runtime, it says I can't have that item in more than one location
unless I clone it?

 

[DeveloperX]

Yeah listviews use ListViewItem objects as opposed to just a bunch of
objects. ListViewItem has a clone method on it for that

This works, although I don't know if it's optimal.

comboBox1.Items.Add("an item");
object[] a= new object[comboBox1.Items.Count];
comboBox1.Items.CopyTo(a,0);
comboBox2.Items.AddRange(a);

I'll give it a try - there won't be too many items, so optimal isn't too
much of a worry.

I also lied - copying listview items like that doesn't work! It compiles,
but at runtime, it says I can't have that item in more than one location
unless I clone it?