Enumerable.TakeLast<TSource>(IEnumerable<TSource>, Int32) 方法

定義

命名空間:
System.Linq
組件:
System.Linq.dll
組件:
netstandard.dll

傳回新的可列舉集合，其包含 source 的最後 count 元素。Returns a new enumerable collection that contains the last count elements from source.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Collections::Generic::IEnumerable<TSource> ^ TakeLast(System::Collections::Generic::IEnumerable<TSource> ^ source, int count);
public static System.Collections.Generic.IEnumerable<TSource> TakeLast<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, int count);
static member TakeLast : seq<'Source> * int -> seq<'Source>
<Extension()>
Public Function TakeLast(Of TSource) (source As IEnumerable(Of TSource), count As Integer) As IEnumerable(Of TSource)

類型參數

TSource

可列舉集合中元素的類型。The type of the elements in the enumerable collection.

參數

source
IEnumerable<TSource>

可列舉集合執行個體。An enumerable collection instance.

count
Int32

要從集合末端移除的元素數。The number of elements to take from the end of the collection.

傳回

IEnumerable<TSource>

傳回新的可列舉集合，其包含 source 的最後 count 元素。A new enumerable collection that contains the last count elements from source.

例外狀況

ArgumentNullException

source 為 null。source is null.

備註

如果不是 count 正數，這個方法會傳回空的可列舉集合。If count is not a positive number, this method returns an empty enumerable collection.

適用於