Net foreground how to display background variables!

I occasionally think of a job interview with a company when I first graduated. I used Label and ,. Write () and other things, so the answer is like this, the consequences can be imagined, haha, now I want to really have a bit of hope, just dizzy again ~~

Now remember:

// Background:
Public string str = "123"; // It must be of the Public type.

Write the following code directly at the position on the AspX front-end page:

<Td> <% = str %> </td>

It's actually that simple. Everything is OK!