[2015][Quiz]MidExam_40173032H

Form.cs

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 WindowsMidExam
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            txtOutcome.Clear();
        }

        private void btnRun_Click(object sender, EventArgs e)
        {
            MyDateTime timer = new MyDateTime();
            timer.Year = int.Parse(txtYear.Text);
            timer.Month = int.Parse(cBoxMonth.Text);
            timer.Day = int.Parse(cBoxDay.Text);

            if(rBtnIsLeap.Checked)
            {
                timer.IndexOfFunction = 1;
                timer.Print();
                txtOutcome.Text = timer.Output;
            }

            if(rBtnDayOfMonth.Checked)
            {
                timer.IndexOfFunction = 2;
                timer.Print();
                txtOutcome.Text = timer.Output;
            }
            if (rBtnWeekDay.Checked)
            {
                timer.IndexOfFunction = 3;
                timer.Print();
                txtOutcome.Text = timer.Output;
            }
            if (rBtnMoon.Checked)
            {
                timer.IndexOfFunction = 4;
                timer.Print();
                txtOutcome.Text = timer.Output;
            }
        }
    }
}

MyDateTime.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WindowsMidExam
{
    class MyDateTime
    {        
        private int _year;
        private int _month;
        private int _day;

        private int _dayOfWeek;
        private int _operatorY;
        private int _operatorC;
        private int _operatorM;
        public string Output;
        public int IndexOfFunction = 1;

        public int Year
        {
            get {return _year;}
            set { _year = value; }
        }
        public int Month
        {
            get { return _month; }
            set { _month = value; }
        }
        public int Day
        {
            get { return _day; }
            set { _day = value; }
        }

        public bool IsLeap()
        {
            if (_year % 400 == 0 || (_year % 4 == 0 && _year %100 != 0))
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        public int DaysOfMonth()
        {
            if (_month == 1 || _month == 3 || _month == 5 || _month == 7 || _month == 8 || _month == 10 || _month == 12)
            {
                return _day = 31;
            }
            else if (_month == 4 || _month == 6 || _month ==9 || _month == 11)
            {
                return _day = 30;
            }
            else if (_month ==2)
            {
                if (IsLeap())
                {
                    return _day = 29;
                }
                else
                {
                    return _day = 28;
                }
            }
            else
            {
                return 0;
            }
        }

        public bool IsValid()
        {
            if (_year < 1 || _day > 31)
            {
                return false;
            }
            else if ((_month == 4 || _month == 6 || _month == 9 || _month == 11) && _day > 30)
            {
                return false;
            }
            else if (IsLeap() && _month == 2 && _day > 29)
            {
                return false;
            }
            else if (!IsLeap() && _month ==2 && _day > 28)
            {
                return false;
            }
            else
            {
                return true;
            }
        }

        public int WeekDay()
        {
            if(_month == 1 || _month == 2)
            {
                _operatorY = _year - 1;
            }
            else
            {
                _operatorY = _year;
            }
            _operatorC = _operatorY / 100;
            _operatorY = _operatorY % 100;
            _operatorM = (((_month + 9) % 12) + 1);
            _dayOfWeek = (_day + Convert.ToInt16(Math.Floor(2.6 * Convert.ToDouble(_operatorM) - 0.2)) + _operatorY + Convert.ToInt16(Math.Floor(Convert.ToDouble(_operatorY) / 4)) + Convert.ToInt16(Math.Floor(Convert.ToDouble(_operatorC) / 4)) - 2 * _operatorC) % 7;
            if(_dayOfWeek < 0)
            {
                _dayOfWeek += 7;
            }
            return _dayOfWeek;
        }

        public string Print()
        {
            switch(IndexOfFunction)
            {
                case 1:
                    if (IsLeap())
                    {
                        Output = _year.ToString() + "年是閏年";
                    }
                    else
                    {
                        Output = _year.ToString() + "年是平年";
                    }
                    break;
                case 2:
                    if (IsValid())
                    {
                        Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "合法";
                    }
                    else
                    {
                        Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "不合法";
                    }
                    break;
                case 3:
                    WeekDay();
                    switch(_dayOfWeek)
                    {
                        case 0:
                            Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "星期日";
                            break;
                        case 1:
                            Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "星期一";
                            break;
                        case 2:
                            Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "星期二";
                            break;
                        case 3:
                            Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "星期三";
                            break;
                        case 4:
                            Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "星期四";
                            break;
                        case 5:
                            Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "星期五";
                            break;
                        case 6:
                            Output = _year.ToString() + "/" + _month.ToString() + "/" + _day.ToString() + "星期六";
                            break;
                    }
                    break;
                case 4:
                    Output = "\t" + "Sun" + "\t" + "Mon" + "\t" + "Tue" + "\t" + "Wed" + "\t" + "Thr" + "\t" + "Fri" + "\t" + "Sat";
                    Output += Environment.NewLine + "\t";
                    _day = 1;
                    WeekDay();
                    for (int i = 0; i < _dayOfWeek; i++)
                    {
                        Output += "\t";
                    }
                    Output += "1";
                    if ((_dayOfWeek + 1) % 7 == 0)
                    {
                        Output += Environment.NewLine;
                    }
                    for (int i = 2; i < DaysOfMonth() +1 ; i++)
                    {
                        if((_dayOfWeek + i) % 7 ==0)
                        {
                            Output += "\t" + i.ToString() + Environment.NewLine;
                        }
                        else 
                        {
                            Output += "\t" + i.ToString();
                        }                        
                    }
                    break;
            }
            return Output;
        }
    }
}