Hello Friend !
I don't know why it's happen but psl solve my problem. I m used expander in One RadTab in RadTabcontrol. when I change the Tab, RadExpander lost his state. so i m used TabControl events to handle Expander state(open and close).but when i change the tab so expander property "IsExpander = false" i gets all content are Open which should not open. mean Debugger gets "Expamder.IsExpander = False" But.........Expander have open state which should not open.
I don't know why it's happen but psl solve my problem. I m used expander in One RadTab in RadTabcontrol. when I change the Tab, RadExpander lost his state. so i m used TabControl events to handle Expander state(open and close).but when i change the tab so expander property "IsExpander = false" i gets all content are Open which should not open. mean Debugger gets "Expamder.IsExpander = False" But.........Expander have open state which should not open.
private void TabControl_SelectionChanged_1(object sender, RoutedEventArgs e)
{
if(Expander.IsExpanded == true)
{
}
else
{
}
}