Open a existent pdf file using CI

[eluser]Thiago Luiz[/eluser]
Adi, I tried to do what you and hostcord said but I have no success.
Something that I tried was call a function of controller in href into the view and in the controller call $this->load->view('subfolder/file.pdf');

but this way appeared a error like this:

Warning: Unexpected character in input: '' (ASCII=1) state=1 in C:\ complete path on line 394

Parse error: syntax error, unexpected ':' in C:\ complete path on line 394

I don't understand this error because, the pdf file is like any pdf file that can be found on internet