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Leonardo Porro edited this page Jul 28, 2023
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After years of developing data applications using C# and relational databases I ran into the same issues over and over again:
- Disconnected entities: Classes deserialized from http request are not tracked by the DbContext.
- Partial updates: C# doesn't have the undefined value, so null may be really null or not mapped.
- Mapping/auto-mapping: DTOs needs to be mapped to entities leading to tons of code lines or delegation to 3rd party mapper libraries.
Tried different solutions such as:
- GraphDiff which is great but doesn't work for .NET Core and it's performance can be improved
- AutoMapper that doesn't handle ORMs very well and after version 9.0, all mappings has to be defined before using it, which trimmed most of my ideas.
After that I decided to get the best of those tools and try to put them togheter in a library that maps any DTO directly to already attached entities. And this is the result, hope it works for your project!