vb.net – 计算每月的天数

有没有办法计算一个月的天数?
是:

Const July As Integer = 7
Const Feb As Integer = 2

' daysInJuly gets 31. '
Dim daysInJuly As Integer = System.DateTime.DaysInMonth(2001, July)

' daysInFeb gets 28 because the year 1998 was not a leap year. '
Dim daysInFeb As Integer = System.DateTime.DaysInMonth(1998, Feb)

' daysInFebLeap gets 29 because the year 1996 was a leap year. '
Dim daysInFebLeap As Integer = System.DateTime.DaysInMonth(1996, Feb)

信用额度为MSDN.

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