如何在选定日期自动关闭 Telerik RadDateTimePicker

Question

控件声明如下：

 <telerik:RadDateTimePicker InputMode="DateTimePicker"
                            IsTabStop="False"
                            Height="36"
                            Focusable="False"
                            Validation.ErrorTemplate="{x:Null}"
                            SelectionOnFocus="SelectAll"
                            x:Name="OutwardStartDate"
                            BorderThickness="2,2,2,2"
                            SelectedValue="{Binding OutwardDepartureDate, Mode=TwoWay, ValidatesOnDataErrors=true,
                                                                     NotifyOnValidationError=true}" >

我找不到任何 XAML 属性以便在选择日期时自动关闭此控件。我偶然发现了this post on the official website，但是这个问题可以追溯到 5 年前，目前的答案都没有解决我的问题。

Answer 1

您可以简单地挂钩到 SelectionChanged 事件。

在你的 XAML 中如下：

<telerik:RadDateTimePicker InputMode="DateTimePicker"
                           SelectionChanged="RadDateTimePicker_SelectionChanged"
                           IsTabStop="False"
                           Height="36"
                           Focusable="False"
                           Validation.ErrorTemplate="{x:Null}"
                           SelectionOnFocus="SelectAll"
                           x:Name="OutwardStartDate"
                           BorderThickness="2,2,2,2"
                           SelectedValue="{Binding OutwardDepartureDate,
                                               Mode=TwoWay,
                                               ValidatesOnDataErrors=true,
                                               NotifyOnValidationError=true}">

并在后面的代码中更改 IsDropDownOpen 属性：

private void RadDateTimePicker_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    if (e.AddedItems != null)
    {
        var dateTimePicker = sender as RadDateTimePicker;
        dateTimePicker.IsDropDownOpen = false;
    }
}