vb.net - Find a part of text in a listbox

Question

I've been given some code to find text that is contained in a listbox but, its not what I need. When the user types in the textbox (which is the search field), they have to type the exact text, not the part of the text. Is there any way to find a part of a value/text in a listbox?

For example, I have a listbox that contains these items:

1. data1
2. data2

When I type (2) in the search field(textbox/richtextbox), I would like the second item, which contain the '2' value, to be selected.

How can I code this?

Answer 1

You could use IndexOf

Dim hits = From item In listBox1.Items.Cast(Of String)()
           Where item.IndexOf(txtSearch.Text, StringComparison.OrdinalIgnoreCase) >= 0
If hits.Any Then
    listBox1.SelectedItem = hits.First()
End If

If you don't want to ignore the case, just use String.Contains instead of String.IndexOf.

Note that above is a linq query, so it won't work with .NET 2 this way.