private bool Validation()
        {
            if (string.IsNullOrWhiteSpace(TextBoxFirstName.Text))
            {
                MessageBox.Show("Enter first name");
                TextBoxFirstName.Focus();
                return(false);
            }

            if (string.IsNullOrWhiteSpace(TextBoxLastName.Text))
            {
                MessageBox.Show("Enter last name");
                TextBoxLastName.Focus();
                return(false);
            }

            if (string.IsNullOrWhiteSpace(DataPicker1.Text))
            {
                MessageBox.Show("Enter date");
                DataPicker1.Focus();
                return(false);
            }

            return(true);
        }
        private bool CheckAllFields()
        {
            ErrMsg errMsg;

            errMsg = Check.CheckField(FieldName.IsInsured, TextBoxInsured.Text);
            if (errMsg.ErrorId != "00")
            {
                SetOnErrMsg(errMsg);
                TextBoxInsured.Focus();
                TextBoxInsured.ForeColor = Color.Red;
                return(false);
            }

            errMsg = Check.CheckField(FieldName.FirstName, TextBoxFirstName.Text);
            if (errMsg.ErrorId != "00")
            {
                SetOnErrMsg(errMsg);
                TextBoxFirstName.Focus();
                TextBoxFirstName.ForeColor = Color.Red;
                return(false);
            }

            errMsg = Check.CheckField(FieldName.LastName, TextBoxLastName.Text);
            if (errMsg.ErrorId != "00")
            {
                SetOnErrMsg(errMsg);
                TextBoxLastName.Focus();
                TextBoxLastName.ForeColor = Color.Red;
                return(false);
            }

            // Sterrenbeeld moet kloppen:

            errMsg = Check.CheckField(FieldName.Zodiac, TextBoxZodiac.Text);
            if (errMsg.ErrorId != "00")
            {
                SetOnErrMsg(errMsg);
                TextBoxZodiac.Focus();
                TextBoxZodiac.ForeColor = Color.Red;
                return(false);
            }

            return(true);
        }