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C#•2y ago•
18 replies
Camster

EF Core Loses Decimal Precision After Save

I'm building a financial system for budgeting. All my money values in SQL server are stored as numeric(18, 2), which is correctly understood by EF Core. However, if I make a calculation that results in numbers beyond 2 decimal places and save it, EF Core does not automatically truncate the decimal value that was saved on the entity object.

In the screenshot, I calculated a new value for "AmountPerMonth" and saved it via SaveChanges. After the save, the "Budget" entity object still has numbers beyond 2 decimal places. If I purge it and completely reload from DB, it loads only 2 decimal places, because obviously in the database it only saves 2. But I need it do truncate it after save, since I am trying to be efficient and automatically caching the value after save.
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