Google Sheets API Integration in C# (.NET)

This C# class allows seamless interaction with Google Sheets using the Google Sheets API v4 via the Google.Apis.Sheets.v4 package. It's designed to help you perform common spreadsheet operations such as reading, writing, updating, and filtering rows — both online and offline.

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🚀 Features

• ✅ Read full datasets from a Google Sheet
• 🔍 Search by ID or any value (returns row/column info)
• ✍️ Update specific cells or entire rows
• ➕ Append new rows
• ❌ Flag rows as deleted using a "delete" column
• 🧼 Filter and delete logic rows locally

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🔧 Prerequisites

• .NET 6+
• NuGet package:

  dotnet add package Google.Apis.Sheets.v4