How to Fix: Entity Framework: "Store update, insert, or delete statement affected an unexpected number of rows (0)."
Entity Framework update issue with unexpected number of rows affected.
📋 Table of Contents
The error message 'Store update, insert, or delete statement affected an unexpected number of rows (0)' typically occurs when the Entity Framework's change tracking mechanism fails to properly track changes made to entities in your database. This can happen due to various reasons such as:
🛑 Root Causes of the Error
- Entities being modified or deleted since they were loaded into the session.
- The Entity Framework's change tracking mechanism not being properly configured.
- Overwriting changes made by another thread or process.
🔧 Proven Troubleshooting Steps
Method 1: Refreshing ObjectStateManager entries
- Step 1: Call the
Reloadmethod on the context object to refresh the Entity Framework's change tracking mechanism.
Method 2: Using SaveChangesAsync with a timeout
- Step 1: Call the
SaveChangesAsyncmethod on the context object, specifying a reasonable timeout value (e.g., 10 seconds) to allow for any potential changes to be saved.
💡 Conclusion
By implementing these methods, you should be able to resolve the 'Store update, insert, or delete statement affected an unexpected number of rows (0)' error and improve the overall reliability of your Entity Framework-based application.
❓ Frequently Asked Questions
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