How to change String value after 5 sec?
<p>I'm willing to write program that after 5 sec  shows text that was hidden and after another 5 sec changes both. Example: 
 - program start:
   TEXT 1
 - after 5 sec:
   TEXT 1 TEXT 2
 - after 5 sec:
   TEXT 3
 - after 5 sec:
   TEXT 3 TEXT 4
...</p>

<p>How I can in C# count those seconds? </p>
