DateTimePicker 仅适用于当前月份

Question

我在表格中有一个 DateTimePicker。我需要将用户限制为仅 select 当前月份的日期：例如，从 1 November 2018 到 30 November 2018。

我尝试了这些代码行：

DtpIssue.MinDate = New Date Time(DateTime.Now.Year, DateTime.Now.Month, 1)
DtpIssue.MaxDate = New Date Time(DateTime.Now.Year, DateTime.Now.Month, 1)

但它只显示当前日期：10 November 2018。我应该怎么做才能确定 DateTimePicker 的当前月份？

Answer 1

月份的最后一天由 DateTime.DaysInMonth() 返回，并传递当前的年份和月份。

Dim FirstOfMonth As Date = New DateTime(Date.Now.Year, Date.Now.Month, 1)
Dim EndOfMonth As Date = 
    New DateTime(Date.Now.Year, Date.Now.Month, Date.DaysInMonth(Date.Now.Year, Date.Now.Month))

以类似的格式应用于您的控件：

DtpIssue.MinDate = New Date(Today.Year, Today.Month, 1)
DtpIssue.MaxDate = New Date(Today.Year, Today.Month, Date.DaysInMonth(Today.Year, Today.Month))

DateTimePicker 仅适用于当前月份

DateTimePicker only for current Month

vb.net

datetime

monthcalendar

datetimepicker

winforms