获取一个月最后一天的最后一个en

如果要指定月份的最后一天,请使用以下命令:

Dim original As DateTime = DateTime.Now ' The date you want to get the last day of the month for
Dim lastOfMonth As DateTime = original.Date.AddDays(-(original.Day - 1)).AddMonths(1).AddDays(-1)

获取当前月份的开始日期和最后一天:

Dim thisMonth As New DateTime(DateTime.Today.Year, DateTime.Today.Month, 1)

'beginning day of the month
thisMonth.ToString("yyyy-MM-01")

'last day of the month
thisMonth.AddMonths(1).AddDays(-1).ToString("yyyy-MM-dd")