i am confuse when using PORTBbits.xxx and LATBbits.xxx resister.
when i used this words PORTBbits then structure get dropdown type come out.
so what is used for what i am really confused.

 

so when to use RB0 and when to use TRISB0.

 

For 18F and enhanced midrange:

The TRIS registers set the direction of the port pin 1=IN, 0=OUT. Writing TRIS is usually done during power up initialization.

PORT and LAT refer to the IO pins themselves. For inputs always read PORT and for writes (including bit set/clear) specify LAT to avoid read-modify-write problems. (PORT and LAT refer to the same pin but work differently to handle these different actions). Never bsf/bcf PORTx always bsf/bcf LATx.

Many pins have multiple functions that must be considered. For example, some are ANALOG on power up and must be explicitly configured to be a digital port.

The IO chapter in the databook covers all of this in detail, providing tables of shared functions and registers used to configure the ports.

 

yes sir this is clear but when i type in editor as:
TRISBbits. then what should i select whether

TRISBbits.RB0

or

TRISBbits.TRISB0

 

It looks likely they are both 0-7 range, so they will both work the same.

However I would still use;
TRISBbits.TRISB0
because it is not possible to confuse that with something else.

 

And sir what about LATBbits
it is also same i think.

LATBbits.LATB0

 

This may also help.
http://stackoverflow.com/questions/2623428/difference-between-port-and-latch-on-pic-18f
Max.

 

yes sir this is clear but when i type in editor as:
TRISBbits. then what should i select ...

A complete answer would require knowing what compiler and what device you are using, as these symbols are defined inside the dot h file the compiler supplies for each device.

However, for a PIC18 device under XC8 you could use either the TRISB0 or the RB0.

Additionally, I agree with RB here, TRISB0 is preferable for readability for reasons of tradition at the very least.