使用powershell获取当月的天数

Question

我需要检索当月的天数,尽管我进行了研究,但我还没有找到PowerShell中的任何内容.以下是我目前为获得想要的结果而构建的内容.有更好的方法吗？

请注意,我仅限于Powershell

    #check to see if this is a leap year
    function LYC
    {
        if ([System.DateTime]::isleapyear((Get-Date).Year))
        {
            $Global:LY = True
        }
    }
    #Get the number of days in current month
    function fNOD
    {
        $MNum = (Get-Date).Month
        switch ($MNum)
        {
            1   {$Global:DaysInMonth=31}
            2   {
                    LYC
                    if (LY)
                    {
                        $Global:DaysInMonth=29
                    } else {
                        $Global:DaysInMonth=28
                    }
                }
            3   {$Global:DaysInMonth=31}
            4   {$Global:DaysInMonth=30}
            5   {$Global:DaysInMonth=31}
            6   {$Global:DaysInMonth=30}
            7   {$Global:DaysInMonth=31}
            8   {$Global:DaysInMonth=31}
            9   {$Global:DaysInMonth=30}
            10  {$Global:DaysInMonth=31}
            11  {$Global:DaysInMonth=30}
            12  {$Global:DaysInMonth=31}
        }
    }

Answer 1

http://msdn.microsoft.com/en-us/library/system.datetime.daysinmonth.aspx

# static int DaysInMonth(int year, int month)
[DateTime]::DaysInMonth(2013, 3)