Hello, im tryin to build some simple application using C#. im using the datagridview + the binding navigation. when im runing the app im available to delete and editing rows. after i click the save button its look like the app is saved the updates as long as the app still runing. After i close the app and return to the page i see the updates are not been saved (as well as they don't saved in the sql database). i know there should be some method that will handle this update (save) request by i can't find that over the net, someone can help?