根据年份月份，获得此月份的所有日期[转]

/// <summary>

/// 根据年份-月份，获得此月份的所有日期

/// </summary>

/// <param name="year">年份</param>

/// <param name="month">月份</param>

/// <returns></returns>

public static ArrayList GetMonth(int year, int month)

{

    ArrayList arr = new ArrayList();

    var first = new DateTime(year, month, 1);

    var last = new DateTime(month == 12 ? year + 1 : year, month == 12 ? 1 : month + 1, 1);

    var days = last.Subtract(first).Days;

    var prevDays = (int)first.DayOfWeek;

    var nextDays = 7 - (int)last.DayOfWeek;

    var result = new StringBuilder("");

    for (int i = -prevDays; i < prevDays + days + nextDays; i++)

    {

        if (i > -1 && i < days)

        {

            arr.Add((i + 1).ToString());

        }

    }

    return arr;

}