C# errors are shown in the Explorer but the editor does not highlight the error line.
Author: bernardodillCreated Sep 17, 2026Updated Sep 17, 2026
Labelsinfo-needednew release
Type: Feature Request
The Explorer shows that the C# file contains errors, but when I open the file, the problematic line is not visually marked with a red underline. I have to open the Problems panel and manually locate the error.
VS Code version: Code 1.138.0 (7debcd0e2acdea1c52de81bf9ee1620444407dda, 2026-09-15T07:24:32Z) OS version: Windows_NT x64 10.0.26200 Modes:
System Info| Item | Value |
|---|---|
| CPUs | 13th Gen Intel(R) Core(TM) i5-13600KF (20 x 3494) |
| GPU Status | 2d_canvas: enabled GPU0: VENDOR= 0x10de, DEVICE=0x1b82 [NVIDIA GeForce GTX 1070 Ti], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.8266 ACTIVE GPU1: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.9278 Machine model name: Machine model version: direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgpu: enabled webnn: disabled_off |
| Load (avg) | undefined |
| Memory (System) | 15.81GB (2.47GB free) |
| Process Argv | --crash-reporter-id f100621f-48f2-42dd-a946-eedbf67e58d4 |
| Screen Reader | no |
| VM | 0% |
| Name | Identifier | Author | Version |
|---|---|---|---|
| Clean Code Tips | chriswingler.clean-code-tips | chriswingler | 2.0.1 |
| C# Dev Kit | ms-dotnettools.csdevkit | ms-dotnettools | 3.20.207 |
| C# | ms-dotnettools.csharp | ms-dotnettools | 2.140.9 |
| .NET Install Tool | ms-dotnettools.vscode-dotnet-runtime | ms-dotnettools | 3.1.0 |
| Live Server | ritwickdey.liveserver | ritwickdey | 5.7.10 |
| Unity | visualstudiotoolsforunity.vstuc | visualstudiotoolsforunity | 1.3.1 |
vsliv368cf:30146710
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
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aj953862:31281341
envsactivate1:31551504
cloudbuttont:31379625
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conptydll_true:31498968
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control_6dc23131:31582662
ei9d7968:31496641
chat:31457767
8hig5102:31480529
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ec1eg703:31520046
ddid_c:31478207
hmra_i5g22:31518061
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
j0d79568:31499440
jb_cp_cls_t_632:31543129
56dj4588:31512888
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jh5f2457_c:31540921
jbcp_cls_pctr_t:31531130
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jf4hg949:31526829
ahp-both-windows:31556933
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nes-ex-cf-euporie-03:31542868
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allow-none:31555437
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treatment-23-1:31555779
unuse_dynamic_mcp:31555281
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nemo-v2:31565334
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session-archive:31558132
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autotiers:31584978
mangle-name-control:31572633
allow-signed-out:31584137
intellij_nes_preview_t:31580086
39a5d156:31574986
2bfb8b39:31576696
soft:31581111
aw-autom-on:31583758
revealsession_control_7ed7e840:31582193
4ab0b639:31584543
codex-agent-host-stable-control:31585316
permission_prompt_treatment:1332566
ccr_pr_nudge_adoption:1319471
vsc_wsm_t:1340632
h5e14506_copy:1348995
cfee5631:1379228
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Source: microsoft/vscode