public void AddOrDecreaseDate(int intValue)
{
try
{
FarsiLibrary.Utils.PersianDate fdt = new FarsiLibrary.Utils.PersianDate();
fdt.Year = Convert.ToInt32(this.Text.Substring(0, 4));
fdt.Month = Convert.ToInt32(this.Text.Substring(5, 2));
fdt.Day = Convert.ToInt32(this.Text.Substring(8, 2));
if ((this.SelectionStart < 5))
{
// Year
if (((fdt.Month == 11) && ((intValue > 0) && (fdt.Day > 29))))
{
fdt.Day = 29;
this.Text = fdt.ToString("d");
}
string str = Convert.ToString((fdt.Year + intValue));
this.Text = this.Text.Remove(0, 4).Insert(0, str.Substring((str.Length - 4)));
this.SelectionStart = 0;
this.SelectionLength = 4;
}
else if ((this.SelectionStart < 8))
{
// Month
int intMonth = (fdt.Month + intValue);
Math.DivRem(intMonth, 12, out intMonth);
if ((intMonth == 0))
{
intMonth = 12;
}
else if ((intMonth < 0))
{
intMonth = Math.Abs(intMonth);
}
if (((intMonth == 12) &&
(fdt.Day > 29)))
{
fdt.Day = 29;
}
else if (((intMonth > 6) &&
(fdt.Day == 31)))
{
fdt.Day = 30;
}
fdt.Month = intMonth;
this.Text = this.Text.Remove(0, 10).Insert(0, fdt.ToString("d"));
this.SelectionStart = 5;
this.SelectionLength = 2;
}
else if ((this.SelectionStart < 11))
{
// Day
this.Text = this.Text.Remove(0, 10).Insert(0, FarsiLibrary.Utils.PersianDateConverter.ToPersianDate(fdt.ToDateTime().AddDays(intValue)).ToString("d"));
this.SelectionStart = 8;
this.SelectionLength = 2;
}
else if ((this.SelectionStart < 14))
{
// Hour
int intHour = Convert.ToInt32(this.Text.Substring(11, 2));
intHour = (intHour + intValue);
intHour = (intHour > 12) ? 1 : (intHour < 1) ? 12 : intHour;
this.Text = this.Text.Remove(11, 2).Insert(11, string.Format("{0:00}", intHour));
this.SelectionStart = 11;
this.SelectionLength = 2;
}
else if ((this.SelectionStart < 17))
{
int intMinute = Convert.ToInt32(this.Text.Substring(14, 2));
intMinute = (intMinute - (intMinute % 5));
intMinute = (intMinute + (intValue * 5));
intMinute = (intMinute >= 60) ? 0 : (intMinute < 0) ? 55 : intMinute;
this.Text = this.Text.Remove(14, 2).Insert(14, string.Format("{0:00}", intMinute));
this.SelectionStart = 14;
this.SelectionLength = 2;
}
else if ((this.SelectionStart <= 20))
{
this.Text = this.Text.Remove(17, 3).Insert(17, (this.Text.Contains("ب.ظ") ? "ق.ظ" : "ب.ظ"));
this.SelectionStart = 17;
this.SelectionLength = 3;
}
}
catch { }
}
