c# wpf - 右键单击更改 SelectedDate 并显示 ContextMenu答案

【问题标题】：c# wpf - Right-Click to change SelectedDate and show ContextMenuc# wpf - 右键单击更改 SelectedDate 并显示 ContextMenu
【发布时间】：2015-10-02 07:56:01
【问题描述】：

我想在 RadCalendar 中实现右键单击事件来更改 SelectedDates 并同时显示 ContextMenu。我正在使用此代码：

XAML

<telerik:RadCalendar Name="radCalendar"
                     Canvas.Left="80"
                     Canvas.Top="200"
                     Height="320"
                     Width="400"
                     SelectedDate="{Binding CurrentDate, ElementName=radScheduleView, Mode=TwoWay}"
                     SelectionMode="Single"
                     DisplayDate="{Binding DisplayDate, Mode=TwoWay}">
    <telerik:RadContextMenu.ContextMenu>
        <telerik:RadContextMenu Opened="RadContextMenu_Opened">
            <telerik:RadMenuItem x:Name="expandOverview"
                                 Header="Expand Overview"
                                 Click="expandOverview_Click" />
            <telerik:RadMenuItem x:Name="showLayouts"
                                 Header="Show Layouts"
                                 Click="showLayouts_Click" />
        </telerik:RadContextMenu>
    </telerik:RadContextMenu.ContextMenu>
</telerik:RadCalendar>

CS

private void RadContextMenu_Opened(object sender, RoutedEventArgs e)
{
    var calendarButton = (sender as RadContextMenu).GetClickedElement<CalendarButton>();
    if (calendarButton != null)
    {
        var calendarButtonContent = calendarButton.Content as CalendarButtonContent;
        if (calendarButtonContent != null)
        {
            var clickedDate = calendarButtonContent.Date;
            //radCalendar.SelectedDate = calendarButtonContent.Date;
        }
    }
}

如果我删除radCalendar.SelectedDate = calendarButtonContent.Date; 中的评论，我可以通过右键单击选择日期，但我需要再次右键单击以显示 ContextMenu，如果我将其保留在评论中，我将显示 ContextMenu，但我无法更改 SelectedDates用右键单击。

【问题讨论】：

标签： c# wpf calendar contextmenu right-click

【解决方案1】：

已解决

我没有使用 Opened，而是使用了 Opening 并添加了处理的属性

private void RadContextMenu_Opening(object sender, Telerik.Windows.RadRoutedEventArgs e)
{
    var calendarButton = (sender as RadContextMenu).GetClickedElement<CalendarButton>();
    if (calendarButton != null && (calendarButton.ButtonType == CalendarButtonType.Date || calendarButton.ButtonType == CalendarButtonType.TodayDate))
    {
        var calendarButtonContent = calendarButton.Content as CalendarButtonContent;
        if (calendarButtonContent != null)
        {
            var clickedDate = calendarButtonContent.Date;
            radCalendar.SelectedDate = calendarButtonContent.Date;
        }
    }
    else
    {
        e.Handled = true;
    }
}

【讨论】：