private void buttonSave_Click(object sender, EventArgs e)
        {
            if ((maskedTextBoxfaxnumber.Text == "") || (textBoxcreditlimit.Text == "") || (textBoxclientID.Text == "") || (textBoxinstitutionname.Text == "") || (textBoxstreet.Text == "") || (textBoxcity.Text == "") || (maskedTextBoxPostalCode.Text == "") || (maskedTextBoxphonenumber.Text == ""))
            {
                MessageBox.Show("You have to fill out all the boxes, try again", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);

                return;
            }
            else
            {
                Client clien = new Client();

                clien.ClientID    = Convert.ToInt32(textBoxclientID.Text);
                clien.Name        = textBoxinstitutionname.Text;
                clien.Street      = textBoxstreet.Text;
                clien.City        = textBoxcity.Text;
                clien.PostalCode  = maskedTextBoxPostalCode.Text;
                clien.PhoneNumber = maskedTextBoxphonenumber.Text;
                clien.FaxNumber   = maskedTextBoxfaxnumber.Text;
                clien.CreditLimit = Convert.ToInt32(textBoxcreditlimit.Text);
                ClientsDA.Save(clien);
            }
            ClearAll();
        }
        private void buttonCliSave_Click(object sender, EventArgs e)
        {
            //Client Validators

            //if (!Validator.IsEmpty(textBoxCliName))
            //{
            //    MessageBox.Show("Author ID field must have 4 digits.", "Validation Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            //    textBoxCliName.Clear();
            //    textBoxCliName.Focus();
            //    return;
            //}

            //if (!Validator.IsValidId(textBoxCliName.Text, 4))
            //{
            //    MessageBox.Show("Author ID field must have 4 digits.", "Validation Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            //    textBoxCliName.Clear();
            //    textBoxCliName.Focus();
            //    return;
            //}


            //if (Validator.IsDuplicate(ListE, Convert.ToInt32(textBoxEmpID.Text)))
            //{
            //    MessageBox.Show("Employee Id already exists!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            //    textBoxEmpID.Clear();
            //    textBoxEmpID.Focus();
            //    return;
            //}


            //Employee First and Last Name Validators
            //if (Validator.IsValidName(textBoxEmpFName))
            //{
            //    MessageBox.Show("Employee First Name cannot have digits or white spaces!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            //    textBoxEmpFName.Clear();
            //    textBoxEmpFName.Focus();
            //    return;
            //}

            //if (Validator.IsValidName(textBoxEmpLName))
            //{
            //    MessageBox.Show("Employee Last Name cannot have digits or white spaces!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            //    textBoxEmpLName.Clear();
            //    textBoxEmpLName.Focus();
            //    return;
            //}

            if (string.IsNullOrEmpty(textBoxCliCredit.Text))
            {
                textBoxCliCredit.Text = "0";
            }

            //Saving the data into the text file
            Clients aClient = new Clients();

            aClient.clientName  = textBoxCliName.Text;
            aClient.phoneNumber = maskedTextBoxCliPhone.Text;
            aClient.city        = textBoxCliCity.Text;
            aClient.street      = textBoxCliStreet.Text;
            aClient.postalCode  = textBoxCliPostalCode.Text;
            aClient.creditLimit = Convert.ToDecimal(textBoxCliCredit.Text);
            ClientsDA.Save(aClient);
            ClearAllCli();
            UpdateComboBoxes();
            buttonCliList.PerformClick();
        }