how to filter comboBox by any part of the list.?

Question

Hello,

the application is built in Winfrom C#. and I have a ComboBox containing a list of items

comboBox1.Items.Add("first One "); 
comboBox1.Items.Add("second term");
 comboBox1.Items.Add("extra one"); 

I need to search for any word in the list, but currently, the filter is only filtering by the first word.

so if I wrote "One" the result should be two items.

if I wrote "second" the result should be one item

Answer 1

You can so domething like this :

       private readonly List<string> items = new List<string> { "first One ", "second term", "extra one" };
       private BindingList<string> _bindinglist;

In Form_Load :

            _bindinglist = new BindingList<string>(items);
            comboBox1.DataSource = _bindinglist;

Test in a Button click

                string sKey = "One";
                Console.WriteLine(sKey);
                var newList = _bindinglist.Where(c => c.IndexOf(sKey, StringComparison.OrdinalIgnoreCase) >= 0);
                foreach (var sItem in newList)
                {
                    Console.WriteLine("\t" + sItem);
                }
                sKey = "second";
                Console.WriteLine(sKey);
                newList = _bindinglist.Where(c => c.IndexOf(sKey, StringComparison.OrdinalIgnoreCase) >= 0);
                foreach (var sItem in newList)
                {
                    Console.WriteLine("\t" + sItem);
                }