CSV Grid Viewer

A simple VS Code extension that opens .csv files in a grid UI and calculates the sum of selected numeric cells.

Features

• Grid view with row/column headers
• Click-to-select cells
• Live count of selected cells
• Live sum of selected numeric values
• "Clear Selection" action

Run Locally

1. Install dependencies:
   • npm install
2. Compile:
   • npm run compile
3. Launch extension development host:
   • Press F5 in VS Code
4. Open a CSV file and run:
   • CSV: Open Grid View

You can also trigger the same command from the editor title bar or file explorer context menu for CSV files.

Publish

Use the publishing workflow in PUBLISHING.md:

1. npm run publish:init -- --publisher <publisher-id> --repo <https://github.com/<user>/<repo>.git>
2. npm run publish:login -- <publisher-id>
3. npm run package:vsix
4. npm run publish:extension