void AddArea() { if (name_txt.Text == null && login_txt.Text == null && paswd_txt.Text == null && email_txt.Text == null && phone_txt.Text == null && url_txt.Text == null && coments_txt.Text == null) { MessageBox.Show("All fields is empty", "empty", MessageBoxButton.OK, MessageBoxImage.Warning); } else if (name_txt.Text == null || login_txt.Text == null || paswd_txt.Text == null || email_txt.Text == null || phone_txt.Text == null || url_txt.Text == null || coments_txt.Text == null) { MessageBox.Show("Some of field are empty", "empty", MessageBoxButton.OK, MessageBoxImage.Warning); } else { WorkArea add_wa = new WorkArea { SiteName = name_txt.Text, Login = login_txt.Text, Password = paswd_txt.Text, Email = email_txt.Text, Phone = Convert.ToInt32(phone_txt.Text), URL = url_txt.Text, Coments = coments_txt.Text, }; add_wa.DateCreate = DateTime.Now; //string query = $"insert into WorkAreas_{num}(SiteName, Email, Login, Password, URL, Phone, Coments, DateCreate) " + // $"values({add_wa.SiteName},{add_wa.Email},{add_wa.Login}," + // $"{add_wa.Password},{add_wa.URL},{add_wa.Phone},{add_wa.Coments},'{add_wa.DateCreate}')"; string msg = Insert.AddWorkArea(add_wa, num); MessageBox.Show(msg); name_txt.Text = login_txt.Text = paswd_txt.Text = email_txt.Text = url_txt.Text = coments_txt.Text = phone_txt.Text = ""; } }