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如何使 WPFToolkit DatePicker 仅突出显示所选日期？

发布于 2024-08-14 05:05:57 字数 339 浏览 1 评论 0原文

我正在使用 WPFToolkit 中的 DatePicker，但由于当前日期和该月的最后/第一天也突出显示，实际选择的日期令人困惑。

如何才能使日历中除了所选日期之外不突出显示任何内容？

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风蛊 2024-08-21 05:05:57

如果我正确理解你的问题，你会想要执行以下操作：
1.隐藏当前日期选择
2.当日历控件弹出时，使焦点矩形设置在选定的日期上（或者我想摆脱它）

N1很容易；你应该将 DatePicker 的 IsTodayHighlighted 属性设置为 false，它就会消失

N2 有点棘手。可能有一种更简单的方法来解决这个问题，但这对我有用：DatePicker 在显示日历控件后立即将焦点移动到日历控件，通过调用

calendar.MoveFocus(new TraversalRequest(FocusNavigationDirection.First));

此方法使焦点矩形在该月的第一天显示；您可以通过强制日历将焦点移至所选日期来修复此问题；下面是 DatePicker 控件的 CalendarOpened 事件处理程序（在我的例子中为 datePicker1）。我使用反射来访问 datapicker 控件的私有字段 _calendar 并执行其私有方法 FocusDate

private void datePicker1_CalendarOpened(object sender, RoutedEventArgs e)
{
    FieldInfo fieldInfo0 = datePicker1.GetType().GetField(
        "_calendar", BindingFlags.Instance | BindingFlags.NonPublic);            
    Microsoft.Windows.Controls.Calendar calendar = 
        (Microsoft.Windows.Controls.Calendar)fieldInfo0.GetValue(datePicker1);
    if (calendar != null)
    {
        MethodInfo focusDateInfo = calendar.GetType().GetMethod("FocusDate", BindingFlags.Instance | BindingFlags.NonPublic);
        focusDateInfo.Invoke(calendar, new object[] { datePicker1.SelectedDate });
    }
}

这将使日历控件在弹出时看起来更干净；但如果用户开始选择不同的月份，仍然会在该月的第一天显示焦点矩形

希望这有帮助，
问候

if I understood your question correctly you would like to do following:
1. hide the current date selection
2. make focus rectangle to be set on the selected date when calendar control pops up (or I guess get rid of it)

N1 is easy; you should set IsTodayHighlighted property of the DatePicker to false and it would disappear

N2 is a little trickier. There might be an easier way for fixing this but here's what working for me: DatePicker moves focus to the calendar control right after showing it by calling

calendar.MoveFocus(new TraversalRequest(FocusNavigationDirection.First));

this makes focus rectangle to be shown on the first day of the month; you can fix it by forcing calendar to move focus to the selected date; below is an CalendarOpened event handler for the DatePicker control (datePicker1 in my case). I'm using reflection to access private field _calendar of the datapicker control and execute its private method FocusDate

private void datePicker1_CalendarOpened(object sender, RoutedEventArgs e)
{
    FieldInfo fieldInfo0 = datePicker1.GetType().GetField(
        "_calendar", BindingFlags.Instance | BindingFlags.NonPublic);            
    Microsoft.Windows.Controls.Calendar calendar = 
        (Microsoft.Windows.Controls.Calendar)fieldInfo0.GetValue(datePicker1);
    if (calendar != null)
    {
        MethodInfo focusDateInfo = calendar.GetType().GetMethod("FocusDate", BindingFlags.Instance | BindingFlags.NonPublic);
        focusDateInfo.Invoke(calendar, new object[] { datePicker1.SelectedDate });
    }
}

this would make calendar control look cleaner when it pops up; but would still show focus rectangle on the first day of the month if user would start selecting different months

hope this helps,
regards

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