now back to C# errors 
ok so i get an index out of range exception when i run the program(your program modified; no clr, demo buttons and my graph/string splitting stuff added). it occurs right after it receives the first line of data from Arduino(so when its splitting the string?). i dunno why this happens, it works fine(the string splitting) in the old program; i just copied to your new one.
i emailed you the code; post was too long...