Assignment Property of connectionstring to OleDb Connection

Good evening everyone, I added a new visual connectionstring in C # property

 

 

 

 

but I can not find how to assign it to the OleDbConnection object in a new class Connection 

 

 

using System;
 using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Data.OleDb;   
namespace GestionReglement.Modele 
{     
class connexion 
    {         
private OleDbConnection con = null;         
public OleDbConnection getconnexion()        
 { 
con = new OleDbConnection();           
  return con;       
  }         
} 
}