[wasm][debugger] Evaluate list?.Count

[thaystg]

1. Copied from: https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1459677
2. Create a new Blazor WebAssembly app using VS2022 (17.0.4)
3. Replace Index.razor with

@page "/"

@code {
    protected override void OnInitialized()
    {
        List<int>? listNull = null; 
        List<int> list = new List<int>() {1};  // or this, doesn't matter
    } // Set breakpoint here
}

4. Set breakpoint at the end of the method (as denoted in the code)
5. Run in debug mode
6. When breakpoint is hit, open Watch window and enter list?.Count

EXPECTED: null is returned or Count is returned

ACTUAL: Microsoft.VisualStudio.Shared.VSCodeDebugProtocol.ProtocolException is thrown

Also, if you try to evaluate the statement in “Immediate Window”, it will just return an empty line.

[ghost]

Tagging subscribers to this area: @thaystg
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Copied from: https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1459677
Create a new Blazor WebAssembly app using VS2022 (17.0.4)
Replace Index.razor with

@page "/"

@code {
    protected override void OnInitialized()
    {
        List<int>? list = null; // or `new List<int>()` (doesn't matter)
    } // Set breakpoint here
}

Set breakpoint at the end of the method (as denoted in the code)
Run in debug mode
When breakpoint is hit, open Watch window and enter list?.Count

EXPECTED: null is returned

ACTUAL: Microsoft.VisualStudio.Shared.VSCodeDebugProtocol.ProtocolException is thrown

Also, if you try to evaluate the statement in “Immediate Window”, it will just return an empty line.

Author:	thaystg
Assignees:	thaystg, ilonatommy
Labels:	untriaged, area-Debugger-mono
Milestone:	-

[ghost]

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

Issue Details

---

1. Copied from: https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1459677
2. Create a new Blazor WebAssembly app using VS2022 (17.0.4)
3. Replace Index.razor with

@page "/"

@code {
    protected override void OnInitialized()
    {
        List<int>? list = null; // or `new List<int>()` (doesn't matter)
    } // Set breakpoint here
}

4. Set breakpoint at the end of the method (as denoted in the code)
5. Run in debug mode
6. When breakpoint is hit, open Watch window and enter list?.Count

EXPECTED: null is returned

ACTUAL: Microsoft.VisualStudio.Shared.VSCodeDebugProtocol.ProtocolException is thrown

Also, if you try to evaluate the statement in “Immediate Window”, it will just return an empty line.

Author:	thaystg
Assignees:	thaystg, ilonatommy
Labels:	arch-wasm, area-Debugger-mono
Milestone:	7.0.0