How can one know the index?

### Type of issue

Other (describe below)

### Description

This explanation begs the question of what value should be passed in as "index". It is described as if it is the ordinal position of the item being added, but the item being added does not yet exist in the list and therefore does not have an ordinal position! This makes no sense. Since the BindingList might have sorting facilities configured, there is no way to know where the item _should_ be placed, either. One would think that AddNew could return this index, but it doesn't.

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.componentmodel.bindinglist-1.endnew?view=net-9.0#system-componentmodel-bindinglist-1-endnew(system-int32)

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.ComponentModel/BindingList`1.xml

### Document Version Independent Id

54506ba0-68b7-a5af-c12a-3f5da59a7ada

### Platform Id

545e576b-5047-c233-87d1-ea4a4ced8ac3

### Article author

@dotnet-bot