BcfReadOnlyArrayListExtensionsSingleOrDefaultTSource Method (BcfReadOnlyArrayListTSource)

Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.

Namespace: System.Linq
Assembly: CalculationWorks.BusinessModel (in CalculationWorks.BusinessModel.dll) Version: 4.2.0

Syntax

Copy

public static TSource SingleOrDefault<TSource>(
	this BcfReadOnlyArrayList<TSource> source
)

<ExtensionAttribute>
Public Shared Function SingleOrDefault(Of TSource) ( 
	source As BcfReadOnlyArrayList(Of TSource)
) As TSource

Parameters

source: Type: CalculationWorks.BusinessModelBcfReadOnlyArrayListTSource
The source.

Type Parameters

TSource: The type of the elements of source.

Return Value

Type: TSource
The only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type BcfReadOnlyArrayListTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

BcfReadOnlyArrayListExtensions Class

SingleOrDefault Overload

System.Linq Namespace