From eb3270621895672820bf978047a4ea8b2f6211b5 Mon Sep 17 00:00:00 2001
From: David Barbet <dabarbet@microsoft.com>
Date: Tue, 8 Apr 2025 15:18:20 -0700
Subject: [PATCH] Only send build only diagnostic ids requests for opening C#
 files

---
 src/lsptoolshost/server/roslynLanguageServer.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lsptoolshost/server/roslynLanguageServer.ts b/src/lsptoolshost/server/roslynLanguageServer.ts
index b0f45da1b9..d207f07dee 100644
--- a/src/lsptoolshost/server/roslynLanguageServer.ts
+++ b/src/lsptoolshost/server/roslynLanguageServer.ts
@@ -895,6 +895,9 @@ export class RoslynLanguageServer {
         // When a file is opened process any build diagnostics that may be shown
         this._languageClient.addDisposable(
             vscode.workspace.onDidOpenTextDocument(async (event) => {
+                if (event.languageId !== 'csharp') {
+                    return;
+                }
                 try {
                     const buildIds = await this.getBuildOnlyDiagnosticIds(CancellationToken.None);
                     await this._buildDiagnosticService._onFileOpened(event, buildIds);