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docs: Document that ApplyConfigurationsFromAssembly requires a parameterless constructor #5366

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docs: Document that ApplyConfigurationsFromAssembly requires a parameterless constructor #5366

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3 changes: 3 additions & 0 deletions entity-framework/core/modeling/index.md
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Expand Up @@ -42,6 +42,9 @@ It is possible to apply all configuration specified in types implementing `IEnti
> [!NOTE]
> The order in which the configurations will be applied is undefined, therefore this method should only be used when the order doesn't matter.

> [!NOTE]
> `ApplyConfigurationsFromAssembly` only instantiates configuration types that have a parameterless constructor; the constructor may be public or non-public. Types whose constructors require parameters are skipped, and a `SkippedEntityTypeConfigurationWarning` is logged. To apply such configurations, instantiate them manually and pass them to <xref:Microsoft.EntityFrameworkCore.ModelBuilder.ApplyConfiguration%2A>.

#### Using `EntityTypeConfigurationAttribute` on entity types

Rather than explicitly calling `Configure`, an <xref:Microsoft.EntityFrameworkCore.EntityTypeConfigurationAttribute> can instead be placed on the entity type such that EF Core can find and use appropriate configuration. For example:
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