.net 4.5 - System.IO.File missing an assembly reference -

.net 4.5 - System.IO.File missing an assembly reference -

i'm trying read text file using system.io.file.readalllines-method error pops saying

the type or namespace 'file' not exist in namespace 'system.io' (are missing assembly reference?

i'm working .net framework 4.5 , vs2012.

first go solution explorer , expand references , check whether system assembly there in list.

if don't have there, right click references , click add reference , .net tab, add together system assembly

now should have system in references list.

now can import namespace system.io

using system.io;

note file class in namespace system.io

so utilize file class in code follows.

file f = new file();//or whatever

i know lastly line sufficient set downwards whole thing completion. ;)

file .net-4.5 .net