[Request] QuickInfo for namespace documentation (on hover + member-list)

[TobiasSekan]

Version Used:
Microsoft Visual Studio Community 2019 Preview
Version 16.7.0 Preview 4.0

Steps to Reproduce:

1. Create a new *.cs file
2. Add a triple slash / one line over the namespace keyword
3. Write between a text between /// <summary> and /// </summary>
4. Hover over the latest namespace word (most right)

Code:

/// <summary>
/// All view-models from MVVM should be here
/// </summary>
namespace Test.Mvvm.ViewModel
{
}

Expected Behavior:
Show the namespace documentation when

• hover over the namespace
• when the namespace selected, in the member list

Actual Behavior:

• Documentation isn't shown on hover
  
• Documentation isn't shown in the member list
  

Possible problems:

• Different documentations inside different files for the same namespace

[CyrusNajmabadi]

Namespaces are not a valid xml location. You can see warning for that in the IDE:

If you wanted this to change, it would have to come through a language change at dotnet/csharplang.

[sharwell]

Duplicate of dotnet/csharplang#315