In my application I use Radgrid and customized insert window which contains another Radgrid. The grid contains selection column and user can select multiple records. I have a problem when the user selects any records and close the window without saving. It looks list of selected items remains stored somewhere and when I open window again I have a problem. At first look it looks fine but if I click on 'Select All' checkbox nothing happened. I try to debug it JS and I see values in _selectedItemsInternal property, but it contains old values (which were selected for the first time before window close).
I execute JS function when window is closed. So I hope I can remove any selection in this, but I tested a lot of functions:
+ grid.ID +
But nothing helps me and when I open it again I have always the same problem. The checkbox 'Select All' doesn't work. When I select records manually one by one then it works.
Do you have any idea what can be wrong with header checkbox or how to clean correctly old values.