// Save the current file*******************************************************************

        private void fileMenuSave_Click(object sender, EventArgs e)
        {
            // First, check to see if child forms are open. If so, ask if want to save.
            PracticeForm child = this.ActiveMdiChild as PracticeForm;

            if (child != null) // don't try to save what doesn't exist
            {
                DialogResult notSoFast = MessageBox.Show("Do you want to save changes?",
                                                         "SAVE CHANGES", MessageBoxButtons.YesNo);

                if (notSoFast == DialogResult.Yes) // save
                {
                    child.writeFile();
                }
                else // don't want to save...
                {
                    Application.Exit();
                }
            }
        }
        // for closing practice forms**************************************************************

        private void fileMenuClose_Click(object sender, EventArgs e)
        {
            // identify the active child form
            PracticeForm child = this.ActiveMdiChild as PracticeForm;

            DialogResult notSoFast = MessageBox.Show("Do you want to save changes?",
                                                     "SAVE CHANGES", MessageBoxButtons.YesNo);

            if (notSoFast == DialogResult.Yes) // save and exit
            {
                try                            // can't close and save a null file
                {
                    // call the active child form to serialize the newly edited file
                    child.writeFile();

                    // reset the window open boolean variable
                    if (child.Text == "Lake Dental Clinic")
                    {
                        dentalOpen = false;
                    }
                    if (child.Text == "Pickens Foot Clinic")
                    {
                        footOpen = false;
                    }

                    // close the child form
                    child.Close();
                }

                catch (NullReferenceException)
                {
                    MessageBox.Show("There's no file open.");
                }
            }
            else // don't want to save...
            {
                this.Close();
            }
        }