Obtain the number of days in a specified month [c #, js]

C #

1: Get the number of days of the specified month
Int Days = DateTime. DaysInMonth (Year, Month); // Year indicates the Year and Month indicates the Month.
2: Number of days in the current month
Int idate = System. DateTime. DaysInMonth (System. DateTime. Now. Year, System. DateTime. Now. Month );

Js

// Method 1
Function DayNumOfMonth (Year, Month)
{
Var d = new Date (Year, Month, 0 );
Return d. getDate ();
}
// Method 2
Function DayNumOfMonth (Year, Month)
{
Month --;
Var d = new Date (Year, Month, 1 );
D. setDate (d. getDate () + 32-d.getDate ());
Return (32-d.getDate ());
}
// Method 3
Function DayNumOfMonth (Year, Month)
{
Return 32-new Data (year, month, 32). getData ();
}