Blazor WASM .net 8: VS can not show variables in Locals or Immediate Window #55055
Description
Is there an existing issue for this?
- I have searched the existing issues
Describe the bug
We have a Blazor WASM App (lets call it host) in .net 8. This app loads other blazor libraries as plugins via AssemblyLoadContexts LoadFromAssemblyPath.
if we hit a breakpoint of the host app we see the local variables via Visual studio immediate window or locals window.
if we hit a breakpoint of a plugin and I want to show the content of a local variable, the following error occurs
Uncaught BUG: Unable to get properties for scope: 1. System.Exception: Error resolving scope properties SendDebuggerAgentCommand failed for RefIsDelegate: [Result: IsOk: False, IsErr: True, Value: , Error: {
"result": {
"type": "object",
"subtype": "error",
"className": "Error",
"description": "Error: Failed on mono_wasm_send_dbg_command\n at Object.Bt [as mono_wasm_send_dbg_command] (https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js:3:21463)\n at <anonymous>:1:30\n at mono_wasm_fire_debugger_agent_message_with_data_to_pause (https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js:3:20935)\n at mono_wasm_fire_debugger_agent_message_with_data (https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js:3:154928)\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1359]:0x6df67\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1467]:0x7557f\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1466]:0x74f62\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1392]:0x703e9\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1356]:0x6ddde\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[241]:0x
1ba67",
"objectId": "83209364177904658.2.184"
},
"exceptionDetails": {
"exceptionId": 15,
"text": "Uncaught",
"lineNumber": 2,
"columnNumber": 21456,
"scriptId": "25",
"stackTrace": {
"callFrames": [
{
"functionName": "Bt",
"scriptId": "25",
"url": "https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js",
"lineNumber": 2,
"columnNumber": 21462
},
{
"functionName": "",
"scriptId": "774",
"url": "",
"lineNumber": 0,
"columnNumber": 29
},
{
"functionName": "mono_wasm_fire_debugger_agent_message_with_data_to_pause",
"scriptId": "25",
"url": "https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js",
"lineNumber": 2,
"columnNumber": 20934
},
{
"functionName": "mono_wasm_fire_debugger_agent_message_with_data",
"scriptId": "25",
"url": "https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js",
"lineNumber": 2,
"columnNumber": 154927
},
{
"functionName": "$func1359",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 450407
},
{
"functionName": "$func1467",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 480639
},
{
"functionName": "$func1466",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 479074
},
{
"functionName": "$func1392",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 459753
},
{
"functionName": "$func1356",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 450014
},
{
"functionName": "$func241",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 113255
},
{
"functionName": "$func238",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 102391
},
{
"functionName": "$func272",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 119160
},
{
"functionName": "$func3184",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 951830
},
{
"functionName": "$func2504",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 779116
},
{
"functionName": "$func2510",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 781200
},
{
"functionName": "$func2534",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 791015
},
{
"functionName": "$mono_wasm_invoke_method_bound",
"scriptId": "26",
"url": "https://localhost:7123/_framework/dotnet.native.wasm",
"lineNumber": 0,
"columnNumber": 42233
},
{
"functionName": "Module._mono_wasm_invoke_method_bound",
"scriptId": "24",
"url": "https://localhost:7123/_framework/dotnet.native.8.0.4.rkw194kvb3.js",
"lineNumber": 7,
"columnNumber": 123344
},
{
"functionName": "kr",
"scriptId": "25",
"url": "https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js",
"lineNumber": 2,
"columnNumber": 35364
},
{
"functionName": "",
"scriptId": "25",
"url": "https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js",
"lineNumber": 2,
"columnNumber": 180805
},
{
"functionName": "beginInvokeDotNetFromJS",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 45107
},
{
"functionName": "invokeDotNetMethodAsync",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 3955
},
{
"functionName": "invokeDotNetStaticMethodAsync",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 3323
},
{
"functionName": "",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 56171
},
{
"functionName": "",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 32090
},
{
"functionName": "je",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 32036
},
{
"functionName": "Me",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 31604
},
{
"functionName": "",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 22272
},
{
"functionName": "",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 22286
},
{
"functionName": "",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 14960
},
{
"functionName": "onGlobalEvent",
"scriptId": "19",
"url": "https://localhost:7123/_framework/blazor.webassembly.js",
"lineNumber": 0,
"columnNumber": 14948
}
]
},
"exception": {
"type": "object",
"subtype": "error",
"className": "Error",
"description": "Error: Failed on mono_wasm_send_dbg_command\n at Object.Bt [as mono_wasm_send_dbg_command] (https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js:3:21463)\n at <anonymous>:1:30\n at mono_wasm_fire_debugger_agent_message_with_data_to_pause (https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js:3:20935)\n at mono_wasm_fire_debugger_agent_message_with_data (https://localhost:7123/_framework/dotnet.runtime.8.0.4.ogva3chynz.js:3:154928)\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1359]:0x6df67\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1467]:0x7557f\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1466]:0x74f62\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1392]:0x703e9\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[1356]:0x6ddde\n at https://localhost:7123/_framework/dotnet.native.wasm:wasm-function[241]:
0x1ba67",
"objectId": "83209364177904658.2.185"
}
}
} ]
empty locals window in VS:
Additional Info: we previously migrated from .net 6 to .net 8.
In .net 6 the inspection of the variables in this environment worked.
please let me know if you need further info.
Expected Behavior
Show the local variables with its content in VS local window and immediate window.
Steps To Reproduce
No response
Exceptions (if any)
No response
.NET Version
No response
Anything else?
Blazor WASM .net 8
VS 17.9.6
MS Edge Version 123.0.2420.81
dotnet --info:
.NET SDK:
Version: 8.0.204
Commit: c338c7548c
Workload version: 8.0.200-manifests.7d36c14f
Laufzeitumgebung:
OS Name: Windows
OS Version: 10.0.22631
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.204\
Installierte .NET-Workloads:
[maccatalyst]
Installationsquelle: VS 17.9.34728.123
Manifestversion: 17.2.8004/8.0.100
Manifestpfad: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.maccatalyst\17.2.8004\WorkloadManifest.json
Installationstyp: Msi
[ios]
Installationsquelle: VS 17.9.34728.123
Manifestversion: 17.2.8004/8.0.100
Manifestpfad: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.ios\17.2.8004\WorkloadManifest.json
Installationstyp: Msi
[maui-windows]
Installationsquelle: VS 17.9.34728.123
Manifestversion: 8.0.7/8.0.100
Manifestpfad: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.maui\8.0.7\WorkloadManifest.json
Installationstyp: Msi
[android]
Installationsquelle: VS 17.9.34728.123
Manifestversion: 34.0.52/8.0.100
Manifestpfad: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.android\34.0.52\WorkloadManifest.json
Installationstyp: Msi
[wasm-tools-net6]
Installationsquelle: VS 17.9.34728.123
Manifestversion: 8.0.4/8.0.100
Manifestpfad: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.workload.mono.toolchain.net6\8.0.4\WorkloadManifest.json
Installationstyp: Msi
[wasm-tools]
Installationsquelle: VS 17.9.34728.123
Manifestversion: 8.0.4/8.0.100
Manifestpfad: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.workload.mono.toolchain.current\8.0.4\WorkloadManifest.json
Installationstyp: Msi
Host:
Version: 8.0.4
Architecture: x64
Commit: 2d7eea2529
.NET SDKs installed:
8.0.100-rc.1.23463.5 [C:\Program Files\dotnet\sdk]
8.0.204 [C:\Program Files\dotnet\sdk]
.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.29 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.18 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0-rc.1.23421.29 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.29 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.18 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0-rc.1.23419.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.29 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.18 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.0-rc.1.23420.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.4 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]
Environment variables:
Not set
global.json file:
Not found
Learn more:
https://aka.ms/dotnet/info
Download .NET:
https://aka.ms/dotnet/download