It seems that the reason for the issue is a typo in the name of the controller. It is called Administration
and in the dataSource configuration it is specified as read.Action("GetListaUtenti", "Administrator
Another issue might be the returned result. It should be wrapped with the ToDataSourceResult method in order for the paging, sorting, filtering etc. to be applied.
Please let me know if the Grid is working now. I am looking forward to hearing from you.
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