suggesting button according to data enter in search box

A possible option would be the use of a dictionary as a lookup. Below a quick example (windows application). In this example, the dictionary key is what is type in the textbox and the associated value is a button. If the user types a text and it matches a key in the dictionary, the associated button will get the focus.

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        Dictionary lookup = new Dictionary();

        public Form1()
        {
            InitializeComponent();
            lookup.Add("abc", button1);
            lookup.Add("def", button2);
            lookup.Add("xyz", button3);
            lookup.Add("123", button1);

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            if (lookup.ContainsKey(textBox1.Text))
            {
                lookup[textBox1.Text].Focus();
            }
        }
    }
}

Hope this can be a base for what you need.