$PSBoundParametersDictionary should better inherit from System.Collections.Hashtable

Summary of the new feature / enhancement

Currently the System.Management.Automation.PSBoundParametersDictionary class inherits from System.Collections.Generic.Dictionary<string, object>. This leads to following problems:

Whenever you add or remove elements to or from the automatic variable PSBoundParameters, a bool value is output. This is because the Add and Remove methods of the class Dictionary are not void.

That is for C# not a problem, but in Powershell, a script or function using those methods produces unwanted output.

I propose to inherit from the System.Collections.Hashtable class. This is actually also what a pwsh developer would expect.

I also recommend to define a specialized object for the Value object of each parameter element. This specialized object, let's call it PSBoundArgument should have two read-only properties:

IsBoundPositionally
IsBoundByDefaultValue

This approach is much more reasonable than the current solution of having a List of positional values as the BoundPositionally property of the dictionary!

That, of course, would complicate the assignment of new items to $PSBoundParameters, so the Add method has then to be overridden, so that objects of correct types are added to the hashtable. Maybe a third property called IsAdditional is then reqired too.

Proposed technical implementation details (optional)

No response

Không có tệp hoặc bài kiểm thử nào được nêu. Hãy bắt đầu bằng cách tìm lớp System.Management.Automation.PSBoundParametersDictionary và xem xét tính kế thừa hiện tại, hành vi Add/Remove cũng như cách biểu diễn BoundPositionally; để hoàn tất, cần xác định và triển khai các thay đổi API được đề xuất cùng với phạm vi kiểm thử hồi quy phù hợp.