<Window x:Class="Testpopup.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
<Grid>
    <StackPanel>
        <TextBox  x:Name="text" GotKeyboardFocus="text_GotKeyboardFocus" />
        <Button Click="Button_Click"  Content="but"/>
        <Popup x:Name="popup" Width="100" Height="100" PlacementTarget="{Binding ElementName=text}"
            StaysOpen="False">
            <Grid>
                <StackPanel>
                    <DatePicker />
                    <TextBox />
                </StackPanel>
            </Grid>
        </Popup>

    </StackPanel>
</Grid>

private void Button_Click(object sender,RoutedEventArgs e)
    {
        popup.IsOpen = true;
    }

    private void text_GotKeyboardFocus(object sender,KeyboardFocusChangedEventArgs e)
    {
        popup.IsOpen = true;
    }

如果我点击按钮,一切正常
如果我点击文本框弹出窗口打开和关闭

如果我删除StaysOpen =“False”,弹出窗口打开但从不关闭

我尝试将焦点放在弹出窗口之前打开它,但它不起作用

你有什么主意吗 ？

非常感谢,
尼达尔.