//搜索按钮
private void QueryBtn_Click(object sender, RoutedEventArgs e)
{
Time1.SelectedDateFormat = DatePickerFormat.Short;
Time2.SelectedDateFormat = DatePickerFormat.Short;
string time1 = Time1.SelectedDate.ToString();
string time2 = Time2.SelectedDate.ToString();
List <Activity> activities = dbUtill.QueryActivities(Keyword.Text, time1, time2);
if (activities.Count > 0)
{
activity_panel.ItemsSource = activities;
}
else
{
MessageBox.Show("暂未找到匹配的记录", "提示");
}
}
