title: how to open a file such as pdf,etc "from" a windows form app in C#
body: <p>I want to create a windows form containing a linklable such that when user clicks on that linklable, a file with some format(for example a pdf file or html file) which is added to resources,opens.
  it will not be opened in form,it means the file will be opened out of program with adobe reader or another program.
  How can I do this?
  Thank you</p>