title: Exception in opening a file that is already open
body: <p>I am building an application in C# in which I have to open a CSV file to read data from it. I get an exception when I try to open the CSV file from C# when that file is already open in Excel. The exception says that the process cannot access the file since it is already open. How can I solve this problem and open the file even if it is opened in other application?</p>
  
  <p>Thanks,
  Rakesh.</p>