Can anyone test uploading a .cs file to ChatGPT (desktop)?
On March 22nd, someone posted a quiet crowd-sourcing request to the ChatGPT community: can anyone confirm whether uploading a .cs file — a C-Sharp source file — to the ChatGPT desktop application actually works? That is the entirety of what was captured. No follow-up response made it into the signal. No confirmation, no denial, no pile-on from developers saying yes, this is broken, or no, works fine here. The low engagement score suggests the post landed softly, which is either because nobody cared or because the people who would care were busy trying it themselves. Developer troubleshooting posts have a particular texture — they tend not to be philosophical. When someone stops mid-workflow to ask strangers on the internet whether a specific file format works, they are usually standing at the exact point where something either failed them or surprised them.
If confirmed, this matters in a narrow but real way for developers using ChatGPT as a coding assistant. The desktop application, as distinct from the browser version, has its own file handling behaviour, and gaps in supported formats create small but genuine friction in professional workflows. C-Sharp is not an obscure language — it sits at the core of Unity development, enterprise .NET work, and a wide range of Windows application development. If .cs files cannot be uploaded directly, developers are left copying and pasting code manually, which is the kind of tedious workaround that quietly erodes trust in a tool. The second-order effect is simpler: file format support signals how seriously OpenAI treats developers as a primary user class on desktop, not just an afterthought.
Watch for developer forum threads or GitHub issue trackers picking this up with reproducible steps. A pattern of similar reports across different file types would be the sign that this is a systematic gap rather than a one-off quirk.
<!-- SC_OFF --><div class="md"><p>Hey all — I’ve been troubleshooting a weird issue for a few days and could use some quick help.</p> <p>On my ChatGPT Plus account:</p> <p>I
<!-- SC_OFF --><div class="md"><p>I’ve generally had no major issues with ChatGPT. I use all the leading AI tools, including Gemini, Claude, and Perplexity, but ChatGPT is my
<table> <tr><td> <a href="https://www.reddit.com/r/ChatGPT/comments/1sixsip/i_have_been_getting_a_weird_issue_where_chatgpt/"> <img alt="I have been getting a weird issue where
  submitted by   <a href="https://www.reddit.com/user/Sweet_Ad_6040"> /u/Sweet_Ad_6040 </a> <br /> <span><a
<!-- SC_OFF --><div class="md"><p>Hello.<br /> Since ChatGPT was updated, it frequently stops with a ■ and I can’t continue the conversation. Is this happening only to me?<br />
<table> <tr><td> <a href="https://www.reddit.com/r/ChatGPT/comments/1s49r7g/chatgpt_host_error/"> <img alt="chatgpt Host Error"
<!-- SC_OFF --><div class="md"><p>I use ChatGPT every day for work and after a while my chats just start freezing and lagging really bad. Sometimes the whole browser tab
<table> <tr><td> <a href="https://www.reddit.com/r/ChatGPT/comments/1t9jfo5/chatgpt_is_terrible_at_long_conversation_threads/"> <img alt="ChatGPT is terrible at long conversation
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