如何涂黑一周中的特定日期(日期选择器)[VB] [英] How to black out specific days of the week (datepicker) [VB]

问题描述

我想知道是否有可能使日历(DatePicker)中的特定日期变得不可用，更具体地说是每个星期一和星期二.我发现了类似的主题(如何创建仅包含星期日的DatePicker和>jQuery UI datepicker上的第一个星期)有关日期不正确的信息，但是，我无法针对自己的特定目的修改其代码.我正在VB.NET(WPF)中编写此应用程序.

I was wondering if it is possible to make particular days unavailable from the calendar (DatePicker), more specifically every Monday and Tuesday. I have found similar threads (How do create a DatePicker with only Sundays enabled? and Disable specific days of the week on jQuery UI datepicker) about blacking out dates, however, I have not been able to modify their code for my specific goal. I'm writing this application in VB.NET (WPF).

我到目前为止使用的用于涂黑日期的函数是:

The functions I used so far, for blacking out dates are:

Datepicker1.BlackoutDates.AddDatesInPast()
Datepicker2.BlackoutDates.Add(New CalendarDateRange(DateTime.Now.AddDays(1), DateTime.MaxValue))

第一个函数将删除过去的日期，第二个函数将删除所有将来的日期.因为第二个功能需要一个"DateRange"，所以我无法根据需要更改此功能.

Where the first function will blackout the past-dates, and the second will black out all future dates. Because there is a 'DateRange' required for the second function, I'm not able to alter this function for my need.

预先感谢

杰里

推荐答案

我修改了其中一个示例，并提出了这个示例.
它对我有用.

I modified one of the examples and came up with this.
It worked for me.

    private void MyDatePicker_CalendarOpened(object sender, RoutedEventArgs e)
    {
        MyDatePicker.DisplayDateStart = DateTime.Now;
        MyDatePicker.DisplayDateEnd = DateTime.Now + TimeSpan.FromDays(1000);

        var minDate = MyDatePicker.DisplayDateStart ?? DateTime.MinValue;
        var maxDate = MyDatePicker.DisplayDateEnd ?? DateTime.MaxValue;

        for (var d = minDate; d <= maxDate &&  DateTime.MaxValue >  d; d = d.AddDays(1))
        {
            if (d.DayOfWeek == DayOfWeek.Monday || d.DayOfWeek == DayOfWeek.Tuesday)
            {
                MyDatePicker.BlackoutDates.Add(new CalendarDateRange(d));
            }
        }
    }

这是一个奖励:防止某些日期被选中.

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