public void ValidateFields()
{
ValidationHandler validation = new ValidationHandler();
validation.CheckNull(ref txt_name, "Name ");
validation.CheckMaxLength(ref txt_name, "Name ", 30);
validation.CheckNull(ref txt_exp, "ExpiryDate ");
validation.CheckNull(ref txt_mfg, "MfgDate ");
validation.CheckNull(ref txt_batch, "Batch Number ");
validation.CheckMaxLength(ref txt_batch, "Batch Number ", 30);
validation.CheckNumber(ref txt_price, "Price ");
validation.CheckMaxLength(ref txt_price, "Price ", 30);
validation.CheckNumber(ref txt_qrcode, "QrCode ");
validation.CheckMaxLength(ref txt_qrcode, "QrCode ", 30);
validation.CheckDateComparison(ref txt_mfg, ref txt_exp);
validation.CheckDate(ref txt_exp, "Expiry Date");
MessageCollection.copyFrom(validation.messageCollection);
}
