The myRIO doesn't actually run on your computer. It has its own OS and file system. Would you expect your friend's computer to write to your computer's harddrive? Well, it can if you use a shared folder and address the folder with the network name. So you need to supply a network address for your shared folder on your system that the myRIO can then write to.
actually , I just need write data on file when I run the system.
I don't understand what you mean by this.
Again, the myRIO is its own little computer. Anything that you run will be ON THE MYRIO. The myRIO doesn't have a GUI. So you need to supply the file path manually and you need to give it a network address if you want it writing to your harddrive. Otherwise it tries to write on its own flash drive.
So, could you give me an example code for write data on myrio drive.plz
or any helpfull link.