Question

I have a listbox with list item values like B1, B2,…B7000…etc. Everytime when items get appended to the listbox, I need to sort the whole listbox.

At the moment, they are sorted in this way B1, B100, B1000, B2, B200 etc which is not logical.

How can I sort so that it is like B1, B2, B3….?

I’ve been trying to use LINQ but it doesn’t work:

List<ListItem> list = new List<ListItem>(ListBox7.Items.Cast<ListItem>());
list = list.OrderBy(li => li.Text).ToList<ListItem>();
ListBox7.Items.Clear();
ListBox7.Items.AddRange(list.ToArray<ListItem>());

Please help! I’ve looked everywhere and could not find a solution!

Answer 1

var list = listBox.Items.Cast<ListItem>()
            .OrderBy(item => int.Parse(item.Text.TrimStart('B')));

listBox.Items.Clear();
listBox.Items.AddRange(list.ToArray());