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EFCoreObjectSpace.FirstOrDefault<ObjectType>(Expression<Func<ObjectType, Boolean>>, Boolean) Method

Searches for the first object that matches the specified criteria.

Namespace: DevExpress.ExpressApp.EFCore

Assembly: DevExpress.ExpressApp.EFCore.v20.1.dll

Declaration

public override ObjectType FirstOrDefault<ObjectType>(
    Expression<Func<ObjectType, bool>> criteriaExpression,
    bool inTransaction
)
    where ObjectType : class
Public Overrides Function FirstOrDefault(Of ObjectType As Class)(
    criteriaExpression As Expression(Of Func(Of ObjectType, Boolean)),
    inTransaction As Boolean
) As ObjectType

Parameters

Name Type Description
criteriaExpression Expression<Func<ObjectType, Boolean>>

A lambda expression to search for an object.

inTransaction Boolean

true if the method takes unsaved changes into account; otherwise, false.

Type Parameters

Name Description
ObjectType

A type of an object to be returned.

Returns

Type Description
ObjectType

The first object that matches the specified criteria. null (Nothing in Visual Basic) if there is no persistent object that matches the criteria.

See Also