Good Morning,
Dear, Moradi
i can convert TIN to Raster from ArcMap i done befort, but the probleme is how i can open the file again from ArcMap.
i didn`t understand your second step: Then try opening the grid into your Focus, (When choosing FileOpen, you should use the "Choose Directory" and select the Grid directory). Afterwards you can export it to any format you like.
please, can you explain for me step by step i can not fellow you.
thank you for your help.
Aicha