// Declare a BarTender application variable 
                
                BarTender.Application btApp; 
                
                // Create a new instance of BarTender 
                
                btApp = new BarTender.Application();
                
                // Set the BarTender application visible
                
                btApp.Visible = true;
                
                //Set the license server port
                
                btApp.LicenseServer.Port = 5160;
                
                //Set the alternate license server port
                
                btApp.LicenseServer.AlternatePort = 6000;
                
                //End the BarTender process 
                
                btApp.Quit(BarTender.BtSaveOptions.btDoNotSaveChanges);