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Enumerable.DefaultIfEmpty Method

.NET Framework 4.5

Returns the elements of an IEnumerable<T>, or a default valued singleton collection if the sequence is empty.

This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.

	Name	Description
	DefaultIfEmpty<TSource>(IEnumerable<TSource>)	Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty.
	DefaultIfEmpty<TSource>(IEnumerable<TSource>, TSource)	Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.

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Enumerable Class

System.Linq Namespace

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