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

定义

命名空间:
System.Linq
程序集:
System.Linq.dll
程序集:
netstandard.dll

返回一个新的可枚举集合，它包含 source 中的元素，但省略了源集合中的 count 个元素。Returns a new enumerable collection that contains the elements from source with the last count elements of the source collection omitted.

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

类型参数

TSource

可枚举集合中的元素的类型。The type of the elements in the enumerable collection.

参数

source
IEnumerable<TSource>

可枚举的集合实例。An enumerable collection instance.

count
Int32

从集合末尾起省略的元素数。The number of elements to omit from the end of the collection.

返回

IEnumerable<TSource>

一个新的可枚举集合，它包含 source 中的元素，但要减去从集合末尾算起的 count 个元素。A new enumerable collection that contains the elements from source minus count elements from the end of the collection.

例外

ArgumentNullException

source 为 null。source is null.

注解

如果不是 count 正数，则此方法返回可枚举集合的相同副本 source 。If count is not a positive number, this method returns an identical copy of the source enumerable collection.

适用于