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;

namespace WinMultiForm
{
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }

        // === 表單載入時執行
        private void frmMain_Load(object sender, EventArgs e)
        {
            lblShow.Text = "";
        }

        // ===  按下 [開啟試算] 鈕執行
        private void btnOpen_Click(object sender, EventArgs e)
        {
            int myMoney = 0, myYear = 0;
            double myRate = 0;
            try
            {
                myMoney = int.Parse(txtMoney.Text);
                myYear = int.Parse(txtYear.Text);
                myRate = double.Parse(txtRate.Text) / 100;
            }
            catch (Exception ex)
            {
                MessageBox.Show("請輸入正確的數值資料");
                return;
            }
            frmCal f = new frmCal(); //宣告並建立frmCal表單類別的f物件

            //使用ShowDialog()方法使 f 以強制回應形式顯示表單
            f.ShowDialog();
            //呼叫frmCal的Cal方法以計算配息方式
            lblShow.Text = myYear.ToString() + " 年後領回本利和：" +
                 f.Cal(myMoney, myYear, myRate).ToString();
        }

        // ===  按 [使用小算盤] 鈕執行
        private void btnOpenCal_Click(object sender, EventArgs e)
        {
            //開啟小算盤應用程式
            System.Diagnostics.Process.Start("C:\\WINDOWS\\system32\\calc.exe");

        }
    }
}