using uCalcSoftware;

var uc = new uCalc();
var t = uc.NewTransformer();
t.Text = "The price is $19.99 today.";
t.Pattern("{@Number}"); // Find the first number
t.Find();

// Get the collection of matches
var matches = t.Matches;

// Check if any match was found and get its text
if (matches.Count() > 0) {
   Console.WriteLine(matches[0].Text);
}