IConventionElementTypeBuilder.IsRequired Method
Definition
Important
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Configures whether elements of the collection must have a value or can be null
.
An element can only be configured as non-required if it is based on a CLR type that can be
assigned null
.
public Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionElementTypeBuilder? IsRequired (bool? required, bool fromDataAnnotation = false);
abstract member IsRequired : Nullable<bool> * bool -> Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionElementTypeBuilder
Public Function IsRequired (required As Nullable(Of Boolean), Optional fromDataAnnotation As Boolean = false) As IConventionElementTypeBuilder
Parameters
- fromDataAnnotation
- Boolean
Indicates whether the configuration was specified using a data annotation.
Returns
The same builder instance if the requiredness was configured,
null
otherwise.
Applies to
Entity Framework
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