title: Keep connection strings in external config file which resides in a parent folder
body: <p>For c# applications (windows apps), Is it possible to insert an external configuration file to keep the connection strings (a common config file to hold the connection strings). I know that can be done for config files which are in the same folder (or in child folders I gess). But I want that common config (which has connectionString node) to be in the parent folder. And at the same time I need to use the same code to read the connection strings.</p>
  
  <p>I have a folder and files structure like this</p>
  
  <p>Parent Folder<br/>
     --> common.connections.config<br/>
     &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--> Folder 1 (App1.exe)<br/>
     &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &nbsp;&nbsp;&nbsp;&nbsp;--> App1.exe.config<br/>
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; --> Folder 2 (App2.exe)<br/>
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--> App2.exe.config<br/></p>
  
  <p>Can anyone help please..</p>