Program Arduino language in Atmel Studio - How?

Other Hardware 3rd Party Boards
2

Hi there, I'm trying to upload the program to an Arduino board which is used Atmega328p by Atmel Studio 6. First, I coded on Arduino IDE then upload. The result is good XD, but when I use the button "upload the program to an Arduino board". Although I saw the light of RXD and TXD were blink :fearful:, I didn't see anything after that :disappointed_relieved:.
My code is make a led blink. :blush:
#include <mega328p.h>
#include <delay.h>

void main(void)
{
DDRD = 0xFF; // set PORT B, C, D output
DDRB = 0xFF;
DDRC = 0xFF;

while (1)
{
PORTD = 0xFF; // turn on PORT B, C, D
PORTB = 0xFF;
PORTC = 0xFF;
for(i=0; i<1000; i++) //wait a sec...
{

}
PORTD = 0x00; // turn off PORT B, C, D
PORTB = 0x00;
PORTC = 0x00;

}
}