private void CustomScrollViewer_ScrollChanged(object sender, ScrollChangedEventArgs e)
{
if (e.Source is CustomScrollLayout && Math.Abs(e.VerticalChange) > 0)
{
CustomNotificationMessenger.Send(NotificationMessageToken.CloseComboBoxItemArea);
}
}
public CustomComboBox()
{
Loaded += (sender, e) =>
{
//设置DisplayMemberPath、SelectedValuePath
DisplayMemberPath = CustomDisplayMemberPath;
SelectedValuePath = CustomSelectedValuePath;
//设置值为默认双向绑定
SetBindingModeToTwoWay();
CustomNotificationMessenger.Register <string>(this, NotificationMessageToken.CloseComboBoxItemArea, message =>
{
//页面滚动条滚动时自动关闭打开的ComboBox下拉项
IsDropDownOpen = false;
});
};
Unloaded += (sender, e) =>
{
CustomNotificationMessenger.Unregister <string>(this);
};
SelectionChanged += CustomComboBox_SelectionChanged;
}
protected void UnregisterMessages()
{
CustomNotificationMessenger.Unregister <string>(this);
}
protected void RegisterMessages()
{
CustomNotificationMessenger.Register <string>(this, NotificationMessageToken.CancelCustomerConfigView, message => Close());
}
