Change content property from dynamically created button in C#

I have dynamically created button in C# using XAML

XAML code:

<Grid Name="mainGrid" Grid.Row="1"></Grid>

and I had created button with this code in C#

C#

Button dugme = new Button();
dugme.Content = "tap me";
dugme.Tapped += dugmelol_Tapped;
mainGrid.Children.Add(dugme);

How can I now change button Content (text) from "tap me" to "tapped ok" in this event.

void dugmelol_Tapped(object sender, TappedRoutedEventArgs e)
{
//should I use binding?
}