private void cmbDayCalendar_Lunar_Month_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
lblDayCalendar_Error.Visible = false;
btnDayCalendar_PreviousDate.Enabled = true;
btnDayCalendar_NextDate.Enabled = true;
currentLunarMonth = int.Parse(cmbDayCalendar_Lunar_Month.Text.Substring(0, 2));
if (cmbDayCalendar_Lunar_Month.Text.Length > 2)
{
currentLunarIsLeapMonth = true;
}
DayCalendar_ModifySelectedDate_Lunar();
LunarDate currentLunarDate = new LunarDate(currentLunarDay, currentLunarMonth, currentLunarIsLeapMonth, currentLunarYear, timeZone);
SolarDate currentSolarDate = currentLunarDate.ToSolarDate();
currentSolarYear = currentSolarDate.Year;
currentSolarMonth = currentSolarDate.Month;
currentSolarDay = currentSolarDate.Day;
cldLunarDayCalendar.SelectedDate = new DateTime(currentSolarYear, currentSolarMonth, currentSolarDay);
}
catch (Exception exc)
{
lblDayCalendar_Error.Text = "Lỗi: " + exc.Message;
lblDayCalendar_Error.Visible = true;
btnDayCalendar_PreviousDate.Enabled = false;
btnDayCalendar_NextDate.Enabled = false;
}
}
public static ArrayList GetMonths(int year, int timeZone)
{
ArrayList months = new ArrayList();
LunarDate lunarDate1 = new LunarDate(1, 1, false, year, timeZone);
LunarDate newMoonDay = lunarDate1;
SolarDate testDate_Solar;
LunarDate testDate_Lunar;
do
{
string month = newMoonDay.Month.ToString("00");
if (newMoonDay.IsLeapMonth)
{
month += " nhuận";
}
months.Add(month);
if (year == 9999 && month == "12")
{
break;
}
testDate_Solar = new SolarDate(newMoonDay.JulianDayNumber + 32);
testDate_Lunar = testDate_Solar.ToLunarDate(timeZone);
newMoonDay = new LunarDate(1, testDate_Lunar.Month, testDate_Lunar.isLeapMonth, year, timeZone);
}while (testDate_Lunar.Year == year);
return(months);
}
private void txtDayCalendar_Lunar_Year_Validated(object sender, EventArgs e)
{
try
{
lblDayCalendar_Error.Visible = false;
btnDayCalendar_PreviousDate.Enabled = true;
btnDayCalendar_NextDate.Enabled = true;
currentLunarYear = int.Parse(txtDayCalendar_Lunar_Year.Text);
DayCalendar_ModifySelectedDate_Lunar();
LunarDate currentLunarDate = new LunarDate(currentLunarDay, currentLunarMonth, currentLunarIsLeapMonth, currentLunarYear, timeZone);
SolarDate currentSolarDate = currentLunarDate.ToSolarDate();
currentSolarYear = currentSolarDate.Year;
currentSolarMonth = currentSolarDate.Month;
currentSolarDay = currentSolarDate.Day;
cldLunarDayCalendar.SelectedDate = new DateTime(currentSolarYear, currentSolarMonth, currentSolarDay);
}
catch (Exception exc)
{
lblDayCalendar_Error.Text = "Lỗi: " + exc.Message;
lblDayCalendar_Error.Visible = true;
btnDayCalendar_PreviousDate.Enabled = false;
btnDayCalendar_NextDate.Enabled = false;
}
}
private void cmbDayCalendar_Lunar_Day_SelectedIndexChanged(object sender, EventArgs e)
{
if (cmbDayCalendar_Lunar_Day.SelectedIndex == -1)
{
return;
}
try
{
lblDayCalendar_Error.Visible = false;
btnDayCalendar_PreviousDate.Enabled = true;
btnDayCalendar_NextDate.Enabled = true;
int currentLunarDay = int.Parse(cmbDayCalendar_Lunar_Day.Text);
currentLunarDate = new LunarDate(currentLunarDay, currentLunarDate.Month, currentLunarDate.IsLeapMonth, currentLunarDate.Year, timeZone);
currentSolarDate = currentLunarDate.ToSolarDate();
cldLunarDayCalendar.SelectedDate = new DateTime(currentSolarDate.Year, currentSolarDate.Month, currentSolarDate.Day);
}
catch (Exception exc)
{
lblDayCalendar_Error.Text = "Lỗi: " + exc.Message;
lblDayCalendar_Error.Visible = true;
btnDayCalendar_PreviousDate.Enabled = false;
btnDayCalendar_NextDate.Enabled = false;
}
}
private void cldLunarDayCalendar_SelectedDateChanged(object sender, EventArgs e)
{
currentSolarYear = cldLunarDayCalendar.SelectedDate.Year;
currentSolarMonth = cldLunarDayCalendar.SelectedDate.Month;
currentSolarDay = cldLunarDayCalendar.SelectedDate.Day;
SolarDate solarDate = new SolarDate(currentSolarDay, currentSolarMonth, currentSolarYear);
LunarDate lunarDate = solarDate.ToLunarDate(timeZone);
currentLunarYear = lunarDate.Year;
currentLunarMonth = lunarDate.Month;
currentLunarIsLeapMonth = lunarDate.IsLeapMonth;
currentLunarDay = lunarDate.Day;
DayCalendar_UpdateValue();
if (solarDate == SolarDate.MinValue)
{
btnDayCalendar_PreviousDate.Enabled = false;
}
else
{
btnDayCalendar_PreviousDate.Enabled = true;
}
if (solarDate == SolarDate.MaxValue)
{
btnDayCalendar_NextDate.Enabled = false;
}
else
{
btnDayCalendar_NextDate.Enabled = true;
}
}
private void cldLunarMonthCalendar_SelectedMonthChanged(object sender, EventArgs e)
{
currentMonth = cldLunarMonthCalendar.SelectedMonth.Month;
currentYear = cldLunarMonthCalendar.SelectedMonth.Year;
txtMonthCalendar_Year.Text = cldLunarMonthCalendar.SelectedMonth.Year.ToString("0000");
cmbMonthCalendar_Month.Text = cldLunarMonthCalendar.SelectedMonth.Month.ToString("00");
if (currentSolarYear == 1 && currentMonth == 1)
{
btnMonthCalendar_PreviousMonth.Enabled = false;
}
else
{
btnMonthCalendar_PreviousMonth.Enabled = true;
}
if (currentYear == 9999 && currentMonth == 12)
{
btnMonthCalendar_NextMonth.Enabled = false;
}
else
{
btnMonthCalendar_NextMonth.Enabled = true;
}
SolarDate sd = new SolarDate(cldLunarMonthCalendar.SelectedMonth);
LunarDate ld = sd.ToLunarDate(timeZone);
}
private void cldLunarDayCalendar_SelectedDateChanged(object sender, EventArgs e)
{
currentSolarDate = new SolarDate(cldLunarDayCalendar.SelectedDate);
currentLunarDate = currentSolarDate.ToLunarDate(timeZone);
DayCalendar_UpdateValue();
if (currentSolarDate == SolarDate.MinValue)
{
btnDayCalendar_PreviousDate.Enabled = false;
}
else
{
btnDayCalendar_PreviousDate.Enabled = true;
}
if (currentSolarDate == SolarDate.MaxValue)
{
btnDayCalendar_NextDate.Enabled = false;
}
else
{
btnDayCalendar_NextDate.Enabled = true;
}
}
private void DayCalendar_ModifySelectedDate_Solar()
{
//Day
int n = SolarDate.GetNumberOfDaysInMonth(currentSolarMonth, currentSolarYear);
if (currentSolarDay > n)
{
currentSolarDay = n;
}
}
private void DayCalendar_ModifySelectedDate_Solar(int solarMonth, int solarYear)
{
//Day
int n = SolarDate.GetNumberOfDaysInMonth(solarMonth, solarYear);
if (currentSolarDate.Day > n)
{
currentSolarDate = new SolarDate(n, solarMonth, solarYear);
}
}
private void DayCalendar_ModifySelectedDate_Lunar(int lunarMonth, bool lunarIsLeapMonth, int lunarYear)
{
//Check mininum value
if (lunarYear == 0)
{
if (currentLunarDate.Month < 11)
{
currentLunarDate = new LunarDate(19, 11, false, 0, timeZone);
}
else if (currentLunarDate.Month == 11)
{
if (currentLunarDate.Day < 19)
{
currentLunarDate = new LunarDate(19, 11, false, 0, timeZone);
}
else
{
currentLunarDate = new LunarDate(currentLunarDate.Day, 11, false, 0, timeZone);
}
}
}
//Month
ArrayList months = LunarDate.GetMonths(lunarYear, timeZone);
if (lunarIsLeapMonth)
{
bool flag = false;
foreach (string month in months)
{
if (month.Length > 2 && month.Substring(0, 2) == lunarMonth.ToString("00"))
{
flag = true;
break;
}
}
if (!flag)
{
currentLunarDate = new LunarDate(currentLunarDate.Day, lunarMonth, false, lunarYear, timeZone);
}
}
//Day
int n = LunarDate.GetNumberOfDaysInMonth(lunarMonth, lunarIsLeapMonth, lunarYear, timeZone);
if (currentLunarDate.Day > n)
{
currentLunarDate = new LunarDate(n, lunarMonth, lunarIsLeapMonth, lunarYear, timeZone);
}
else
{
currentLunarDate = new LunarDate(currentLunarDate.Day, lunarMonth, lunarIsLeapMonth, lunarYear, timeZone);
}
currentSolarDate = currentLunarDate.ToSolarDate();
}
public override bool Equals(object obj)
{
if (obj.GetType() != typeof(SolarDate))
{
return(false);
}
SolarDate solarDate = (SolarDate)obj;
return(solarDate.Year != year || solarDate.Month != month || solarDate.Day != day);
}
public static LunarDate ConvertSolarDateToLunarDate(SolarDate solarDate, int timeZone)
{
long dayNumber = solarDate.JulianDayNumber;
long k = (long)Math.Floor((dayNumber - 2415021.076998695) / 29.530588853);
long monthStart = GetNewMoonDay(k + 1, timeZone);
if (monthStart > dayNumber)
{
monthStart = GetNewMoonDay(k, timeZone);
}
long a11 = GetLunarMonth11(solarDate.Year, timeZone);
long b11 = a11;
int lunarYear = 0;
if (a11 >= monthStart)
{
lunarYear = solarDate.Year;
a11 = GetLunarMonth11(solarDate.Year - 1, timeZone);
}
else
{
lunarYear = solarDate.Year + 1;
b11 = GetLunarMonth11(solarDate.Year + 1, timeZone);
}
int lunarDay = (int)(dayNumber - monthStart + 1);
int diff = (int)Math.Floor((double)((monthStart - a11) / 29));
bool lunarLeap = false;
int lunarMonth = diff + 11;
if (b11 - a11 > 365)
{
int leapMonthDiff = GetLeapMonthOffset(a11, timeZone);
if (diff >= leapMonthDiff)
{
lunarMonth = diff + 10;
if (diff == leapMonthDiff)
{
lunarLeap = true;
}
}
}
if (lunarMonth > 12)
{
lunarMonth = lunarMonth - 12;
}
if (lunarMonth >= 11 && diff < 4)
{
lunarYear -= 1;
}
return(new LunarDate(lunarDay, lunarMonth, lunarLeap, lunarYear, timeZone));
}
//Đông chí thường nằm vào khoảng 19/12-22/12, như vậy trước hết ta tìm ngày Sóc trước ngày 31/12 (trả về số ngày Julius).
//Nếu tháng bắt đầu vào ngày đó không chứa Đông chí thì ta phải lùi lại 1 tháng nữa.
private static long GetLunarMonth11(int year, int timeZone)
{
SolarDate solarDate = new SolarDate(31, 12, year);
double off = solarDate.JulianDayNumber - 2415021.076998695;
long k = (long)Math.Floor(off / 29.530588853);
long nm = GetNewMoonDay(k, timeZone);
double sunLong = GetSunLongitude(nm, timeZone); // sun longitude at local midnight
if (sunLong >= 9)
{
nm = GetNewMoonDay(k - 1, timeZone);
}
return(nm);
}
public Main()
{
InitializeComponent();
currentSolarDate = new SolarDate(DateTime.Today);
currentLunarDate = currentSolarDate.ToLunarDate(timeZone);
currentMonth = DateTime.Today.Month;
currentYear = DateTime.Today.Year;
DayCalendar_FillValue();
MonthCalendar_FillValue();
cldLunarDayCalendar.SelectedDate = DateTime.Today;
cldLunarMonthCalendar.SelectedMonth = DateTime.Today;
}
public static int GetNumberOfDaysInMonth(int month, bool isLeapMonth, int year, int timeZone)
{
if (year == 9999 && month == 12)
{
return(29);
}
LunarDate newMoonDay_Lunar = new LunarDate(1, month, isLeapMonth, year, timeZone);
SolarDate newMoonDay_Solar = newMoonDay_Lunar.ToSolarDate();
SolarDate testDate_Solar = new SolarDate(newMoonDay_Solar.JulianDayNumber + 32);
LunarDate testDate_Lunar = testDate_Solar.ToLunarDate(timeZone);
LunarDate nextNewMoonDay_Lunar = new LunarDate(1, testDate_Lunar.Month, testDate_Lunar.isLeapMonth, testDate_Lunar.Year, timeZone);
SolarDate nextNewMoonDay_Solar = nextNewMoonDay_Lunar.ToSolarDate();
return((int)(nextNewMoonDay_Solar.JulianDayNumber - newMoonDay_Solar.JulianDayNumber));
}
private void DayCalendar_FillValue()
{
//Solar Date
//Year
txtDayCalendar_Solar_Year.Text = currentSolarYear.ToString("0000");
//Month
cmbDayCalendar_Solar_Month.Text = currentSolarMonth.ToString("00");
//Day
cmbDayCalendar_Solar_Day.Items.Clear();
int n = SolarDate.GetNumberOfDaysInMonth(currentSolarMonth, currentSolarYear);
for (int i = 1; i <= n; i++)
{
cmbDayCalendar_Solar_Day.Items.Add((i).ToString("00"));
}
cmbDayCalendar_Solar_Day.Text = currentSolarDay.ToString("00");
//Lunar Date
//Year
txtDayCalendar_Lunar_Year.Text = currentLunarYear.ToString("0000");
//Month
cmbDayCalendar_Lunar_Month.Items.Clear();
foreach (string month in LunarDate.GetMonths(currentLunarYear, timeZone))
{
cmbDayCalendar_Lunar_Month.Items.Add(month);
}
string str = currentLunarMonth.ToString("00");
if (currentLunarIsLeapMonth)
{
str += " nhuận";
}
cmbDayCalendar_Lunar_Month.Text = str;
//Day
cmbDayCalendar_Lunar_Day.Items.Clear();
int m = LunarDate.GetNumberOfDaysInMonth(currentLunarMonth, currentLunarIsLeapMonth, currentLunarYear, timeZone);
for (int i = 1; i <= m; i++)
{
cmbDayCalendar_Lunar_Day.Items.Add(i.ToString("00"));
}
cmbDayCalendar_Lunar_Day.Text = currentLunarDay.ToString("00");
}
//Khởi tạo
public frmMain()
{
InitializeComponent();
currentSolarYear = DateTime.Today.Year;
currentSolarMonth = DateTime.Today.Month;
currentSolarDay = DateTime.Today.Day;
SolarDate today_Solar = new SolarDate(currentSolarDay, currentSolarMonth, currentSolarYear);
LunarDate today_Lunar = today_Solar.ToLunarDate(timeZone);
currentLunarYear = today_Lunar.Year;
currentLunarMonth = today_Lunar.Month;
currentLunarIsLeapMonth = today_Lunar.IsLeapMonth;
currentLunarDay = today_Lunar.Day;
DayCalendar_FillValue();
MonthCalendar_FillValue();
cldLunarDayCalendar.SelectedDate = DateTime.Today;
cldLunarMonthCalendar.SelectedMonth = DateTime.Today;
}
private void DayCalendar_UpdateValue() //Modify the Selected Date and Update Value
{
//Solar Date
//Year
txtDayCalendar_Solar_Year.Text = currentSolarYear.ToString("0000");
//Month
cmbDayCalendar_Solar_Month.Text = currentSolarMonth.ToString("00");
//Day
int n = SolarDate.GetNumberOfDaysInMonth(currentSolarMonth, currentSolarYear);
if (n != cmbDayCalendar_Solar_Day.Items.Count)
{
if (n > cmbDayCalendar_Solar_Day.Items.Count)
{
for (int i = cmbDayCalendar_Solar_Day.Items.Count + 1; i <= n; i++)
{
cmbDayCalendar_Solar_Day.Items.Add(i.ToString("00"));
}
}
else
{
if (int.Parse(cmbDayCalendar_Solar_Day.Text) > n)
{
cmbDayCalendar_Solar_Day.Text = currentSolarDay.ToString("00");
}
for (int i = cmbDayCalendar_Solar_Day.Items.Count - 1; i >= n; i--)
{
cmbDayCalendar_Solar_Day.Items.RemoveAt(i);
}
}
}
cmbDayCalendar_Solar_Day.Text = currentSolarDay.ToString("00");
//Lunar Date
//Year
txtDayCalendar_Lunar_Year.Text = currentLunarYear.ToString("0000");
//Month
ArrayList months = months = LunarDate.GetMonths(currentLunarYear, timeZone);
for (int i = cmbDayCalendar_Lunar_Month.Items.Count - 1; i >= 0; i--)
{
string month = (string)cmbDayCalendar_Lunar_Month.Items[i];
if (month.Length > 2)
{
bool flag = false;
foreach (string month1 in months)
{
if (month1 == month)
{
flag = true;
break;
}
}
if (!flag)
{
cmbDayCalendar_Lunar_Month.Items.RemoveAt(i);
}
}
}
foreach (string month in months)
{
if (month.Length > 2)
{
bool flag = false;
foreach (string month1 in cmbDayCalendar_Lunar_Month.Items)
{
if (month1 == month)
{
flag = true;
break;
}
}
if (!flag)
{
cmbDayCalendar_Lunar_Month.Items.Add(month);
}
}
}
string str = currentLunarMonth.ToString("00");
if (currentLunarIsLeapMonth)
{
str += " nhuận";
}
cmbDayCalendar_Lunar_Month.Text = str;
//Day
int m = LunarDate.GetNumberOfDaysInMonth(currentLunarMonth, currentLunarIsLeapMonth, currentSolarYear, timeZone);
if (m != cmbDayCalendar_Lunar_Day.Items.Count)
{
if (m > cmbDayCalendar_Lunar_Day.Items.Count)
{
for (int i = cmbDayCalendar_Lunar_Day.Items.Count + 1; i <= m; i++)
{
cmbDayCalendar_Lunar_Day.Items.Add((i).ToString("00"));
}
}
else
{
if (int.Parse(cmbDayCalendar_Lunar_Day.Text) > m)
{
cmbDayCalendar_Lunar_Day.Text = currentLunarDay.ToString("00");
}
for (int i = cmbDayCalendar_Lunar_Day.Items.Count - 1; i >= m; i--)
{
cmbDayCalendar_Lunar_Day.Items.RemoveAt(i);
}
}
}
cmbDayCalendar_Lunar_Day.Text = currentLunarDay.ToString("00");
}
private void DayCalendar_UpdateValue()
{
//Solar Date
//Year
txtDayCalendar_Solar_Year.Text = currentSolarDate.Year.ToString("0000");
//Month
cmbDayCalendar_Solar_Month.Text = currentSolarDate.Month.ToString("00");
//Day
cmbDayCalendar_Solar_Day.Items.Clear();
int n = SolarDate.GetNumberOfDaysInMonth(currentSolarDate.Month, currentSolarDate.Year);
for (int i = 1; i <= n; i++)
{
cmbDayCalendar_Solar_Day.Items.Add(i.ToString("00"));
}
cmbDayCalendar_Solar_Day.Text = currentSolarDate.Day.ToString("00");
//Lunar Date
//Year
txtDayCalendar_Lunar_Year.Text = currentLunarDate.Year.ToString("0000");
//Month
if (currentLunarDate.Year > 0)
{
cmbDayCalendar_Lunar_Month.Items.Clear();
ArrayList months = months = LunarDate.GetMonths(currentLunarDate.Year, timeZone);
foreach (string month in months)
{
cmbDayCalendar_Lunar_Month.Items.Add(month);
}
string str = currentLunarDate.Month.ToString("00");
if (currentLunarDate.IsLeapMonth)
{
str += " nhuận";
}
cmbDayCalendar_Lunar_Month.Text = str;
}
else if (currentLunarDate.Year == 0)
{
cmbDayCalendar_Lunar_Month.Items.Clear();
cmbDayCalendar_Lunar_Month.Items.Add("11");
cmbDayCalendar_Lunar_Month.Items.Add("12");
cmbDayCalendar_Lunar_Month.Text = currentLunarDate.Month.ToString("00");
}
//Day
if (currentLunarDate.Year > 0 || (currentLunarDate.Year == 0 && currentLunarDate.Month > 11))
{
cmbDayCalendar_Lunar_Day.Items.Clear();
int m = LunarDate.GetNumberOfDaysInMonth(currentLunarDate.Month, currentLunarDate.IsLeapMonth, currentLunarDate.Year, timeZone);
for (int i = 1; i <= m; i++)
{
cmbDayCalendar_Lunar_Day.Items.Add((i).ToString("00"));
}
cmbDayCalendar_Lunar_Day.Text = currentLunarDate.Day.ToString("00");
}
else if (currentLunarDate.Year == 0 && currentLunarDate.Month == 11)
{
cmbDayCalendar_Lunar_Day.Items.Clear();
for (int i = 19; i <= 30; i++)
{
cmbDayCalendar_Lunar_Day.Items.Add(i.ToString());
}
cmbDayCalendar_Lunar_Day.Text = currentLunarDate.Day.ToString("00");
}
}