Can you explain it little more.
Where you delete the subcategory(from database)?
For refreshing list items made dataprovider variable as bindable, which will automatically refresh the target component once changes made to dataprovider variable.
ya,i am delete from the database.
i am displaying the list of category,
all the category have the subcategory in tree structure.
now i am delete the any one subcategory in questionbank ,assume it's
deleted now click questionpaper button there i am displaying all available
subcategory list based on the category that time it will displaying the deleted data
what you have to do is, again execute the select query for fetch the available subcategory for the selected category and store the result into dataprovider variable. dont forget to make it bindable.
Note : you can share code here for more detail
thanks Mr.Arun .bye