按钮CreatePrizeButton_Click出现问题

Question

不幸的是，当我启动程序时，没有输入数据并按下“创建奖品”按钮，我没有收到消息“此表格包含错误信息。请检查并重试。”我在做什么错了？

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using TrackerLibrary;

namespace TrackerUI
{
    public partial class CreatePrizeForm : Form
    {
        public CreatePrizeForm()
        {
            InitializeComponent();
        }

        private void CreatePrizeButton_Click(object sender, EventArgs e)
        {
            if (ValidateForm())
            {
                PrizeModel model = new PrizeModel(
                    placeNameValue.Text,
                    placeNumberValue.Text,
                    prizeAmountValue.Text,
                    prizePercentageValue.Text);

                foreach (IDataConnection db in GlobalConfig.Connections)
                {
                    db.CreatePrize(model);
                }
            }
            else
            {
                MessageBox.Show("Ten formularz zawiera błędne informacje. Proszę sprawdzić i spróbować ponownie.");
            }

        }
        private bool ValidateForm()
        {
            bool output = true;
            int placeNumber = 0;
            bool placeNumberValidNumber = int.TryParse(placeNumberValue.Text, out placeNumber);

            if (placeNumberValidNumber == false)
            {
                output = false;
            }

            if (placeNumber < 1)
            {
                output = false;
            }

            if (placeNameValue.Text.Length == 0)
            {
                output = false;
            }

            decimal prizeAmount = 0;
            int prizePercentage = 0;

            bool prizeAmountValid = decimal.TryParse(prizeAmountValue.Text, out prizeAmount);
            bool prizePercentageValid = int.TryParse(prizePercentageValue.Text, out prizePercentage);

            if (prizeAmountValid == false || prizePercentageValid == false)
            {
                output = false;
            }

            if (prizeAmount <= 0 && prizePercentage <= 0)
            {
                output = false;
            }

            if (prizePercentage < 0 || prizePercentage > 100)
            {
                output = false;
            }

            return output;

        }
    }
}

嗨

不幸的是，当我启动程序时，没有输入数据并按下“创建奖品”按钮，我没有收到消息“此表格包含错误信息。请检查并重试。”我在做什么错了？