What are C# records used for?

C# records are for immutable data like DTOs and API models, offering value equality and 'with' expressions to create copies without mutation.

When should I use record struct vs record in C#?

Use record struct for small, high-frequency value types to avoid heap allocation; stick to records for larger DTOs needing reference semantics.

Do C# records support inheritance?

Yes, but only from other records—not classes—and equality includes all base properties.

🗄️ Databases & Backend

C# Records: The Immutable Clone Army Your DTOs Deserve

Imagine data that multiplies effortlessly, stays pure, and knows its twins by heart. C# records aren't just syntax sugar—they're your ticket to safer, faster .NET apps.

theAIcatchup Apr 08, 2026 4 min read

C# records diagram showing immutability, with expressions, and value equality comparison to classes

⚡ Key Takeaways

C# records deliver value-based equality and immutability out-of-the-box, perfect for DTOs and APIs. 𝕏
Use 'with' expressions for non-mutating copies; record structs for stack-allocated performance. 𝕏
Swap classes for records in data scenarios— but keep classes for identity-driven entities. 𝕏

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#C# records #immutability C# #record struct #value equality

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