I have read from a excel sheet and wrote this for a BindingList, in Form_Load this is set to a DataSource as BindingSource:
bd = new BindingSource(); //insta
You can not use Filter property to filter a BindingSource which it's DataSource is set to a BindingList.
Only underlying lists that implement the
IBindingListViewinterface support filtering.
You can filter the BindingList using Linq:
var filteredBindingList= new BindingList(bindingList.Where(x=>some criteria).ToList());
Then you can use filtered binding list as data source.