DbContextOptionsBuilder<TContext>.ConfigureWarnings Method

Definition

Namespace:

Microsoft.EntityFrameworkCore

Assembly:

Microsoft.EntityFrameworkCore.dll

Package:

Microsoft.EntityFrameworkCore v8.0.0

Overloads

ConfigureWarnings(Action<WarningsConfigurationBuilder>)

Configures the runtime behavior of warnings generated by Entity Framework. You can set a default behavior and behaviors for each warning type.

ConfigureWarnings(Action<WarningsConfigurationBuilder>)

Configures the runtime behavior of warnings generated by Entity Framework. You can set a default behavior and behaviors for each warning type.

public virtual Microsoft.EntityFrameworkCore.DbContextOptionsBuilder<TContext> ConfigureWarnings (Action<Microsoft.EntityFrameworkCore.Diagnostics.WarningsConfigurationBuilder> warningsConfigurationBuilderAction);

override this.ConfigureWarnings : Action<Microsoft.EntityFrameworkCore.Diagnostics.WarningsConfigurationBuilder> -> Microsoft.EntityFrameworkCore.DbContextOptionsBuilder<'Context (requires 'Context :> Microsoft.EntityFrameworkCore.DbContext)>

Public Overridable Function ConfigureWarnings (warningsConfigurationBuilderAction As Action(Of WarningsConfigurationBuilder)) As DbContextOptionsBuilder(Of TContext)

Parameters

warningsConfigurationBuilderAction

Action<WarningsConfigurationBuilder>

An action to configure the warning behavior.

Returns

DbContextOptionsBuilder<TContext>

The same builder instance so that multiple calls can be chained.

Examples

optionsBuilder.ConfigureWarnings(warnings =>
    warnings.Default(WarningBehavior.Ignore)
        .Log(CoreEventId.IncludeIgnoredWarning, CoreEventId.ModelValidationWarning)
        .Throw(RelationalEventId.BoolWithDefaultWarning));

Remarks

Note that changing this configuration can cause EF to build a new internal service provider, which may cause issues with performance. Generally it is expected that no more than one or two different configurations will be used for a given application.

Note that if the application is setting the internal service provider through a call to UseInternalServiceProvider(IServiceProvider), then this option must configured the same way for all uses of that service provider. Consider instead not calling UseInternalServiceProvider(IServiceProvider) so that EF will manage the service providers and can create new instances as required.

See Using DbContextOptions and Logging for more information and examples.