How to Fix: Unable to update the EntitySet - because it has a DefiningQuery and no <UpdateFunction> element exist
Entity Framework update issue with DefiningQuery and UpdateFunction.
📋 Table of Contents
To resolve the error 'Unable to update the EntitySet - because it has a DefiningQuery and no <UpdateFunction> element exists in the <ModificationFunctionMapping> element to support the current operation.', you need to add an UpdateFunction element to your context's ModificationFunctionMapping.
🔧 Proven Troubleshooting Steps
Method 1: Adding UpdateFunction
- Step 1: Add an UpdateFunction element to your context's ModificationFunctionMapping.
Method 2: Removing DefiningQuery
- Step 1: Remove the DefiningQuery from your entity's metadata.
✨ Wrapping Up
By following these steps, you should be able to resolve the error and successfully update your entity set.
❓ Frequently Asked Questions
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