Text->Contains and Select

Is it possible to use ->Contains to Select "how" in the textBox if this word was found or
is there anyway to search for a word in a textBox and Select this word if this word is found ?

Code:

---

String^ str = "how";

if (richtextBox1->Text->Contains(str))
{
    MessageBox:: Show("found how");
  //Try to select this word
}

---