IdeaBlade DevForce 2010 Help Reference
FirstOrNullEntity Method
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IdeaBlade.EntityModel Assembly > IdeaBlade.EntityModel Namespace > EntityScalarAsyncExtensions Class : FirstOrNullEntity Method



Returns the first element in the sequence, or the appropriate NullEntity if the sequence contains no elements.

Overload List

OverloadDescription
FirstOrNullEntity(IEntityScalarQuery,Action<EntityScalarQueryOperation>,Object) Returns the first element in the sequence, or the appropriate NullEntity if the sequence contains no elements.  
FirstOrNullEntity<TSource>(IEntityScalarQuery<TSource>,Action<EntityScalarQueryOperation<TSource>>,Object) Returns the first element in the sequence, or the appropriate NullEntity if the sequence contains no elements.  
FirstOrNullEntity(IEntityScalarQuery,IPredicateDescription,Action<EntityScalarQueryOperation>,Object) Returns the first element of a sequence that satisfies a specified condition, or the appropriate NullEntity if no such element is found.  
FirstOrNullEntity<TSource>(IEntityScalarQuery<TSource>,Expression<Func<TSource,Boolean>>,Action<EntityScalarQueryOperation<TSource>>,Object) Returns the first element of a sequence that satisfies a specified condition, or the appropriate NullEntity if no such element is found.  

Requirements

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

See Also

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