Method ElementAtOrDefault

ElementAtOrDefault<TSource>(IEnumerable<TSource>, Index)

Returns the element at a specified index in a sequence or a default value if the index is out of range.

Declaration

[Obsolete("This method has been implemented by the framework.")]
public static TSource? ElementAtOrDefault<TSource>(IEnumerable<TSource> source, Index index)

Parameters

Type	Name	Description
IEnumerable<TSource>	source	An IEnumerable<T> to return an element from.
Index	index	The index of the element to retrieve, which is either from the start or the end.

Returns

Type	Description
TSource	default if index is outside the bounds of the source sequence; otherwise, the element at the specified position in the source sequence.

Type Parameters

Name	Description
TSource	The type of the elements of source.

Remarks

If the type of source implements IList<T>, that implementation is used to obtain the element at the specified index. Otherwise, this method obtains the specified element.

This operator is implemented in the bcl as of net6. Source and binary compatibility should be retained across net versions, but this method should be inaccessible in net6+.

Exceptions

Type	Condition
ArgumentNullException	source is null.