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How do you implement filtering and sorting?

Mid ASP.NET Web API
Quick Answer Filtering and sorting: accept filter params in query string: GET /api/orders?status=active&minAmount=100. Sorting: GET /api/users?sort=lastName&dir=asc. Use a filter model class bound with [FromQuery]. Map to EF Core LINQ: .Where(o => o.Status == filter.Status). For complex filtering, use specification pattern or OData. Sanitize sort field names against a whitelist to prevent injection.

Answer

Expose query parameters for filtering and sorting:

  • ?status=active
  • ?sort=name_desc

Combine with pagination for scalable responses.

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