WPF clicks the calendar and needs to click the two-time button

There is a calendar control on the main panel, click to select the date, if you click the Confirm button, you need to click two times. The solution to this problem is as follows:

private void Calendar1_previewmouseup (object sender, MouseButtonEventArgs e) {if (mouse.captured is Calendarite        m) {mouse.capture (null); }} I personally verify. NOTE: Reprint please indicate source: http://blog.sina.com.cn/s/blog_60c069a401011ydn.html

WPF clicks the calendar and needs to click the two-time button