CepStream.OrderByDescending<TPayload, TOrderKey> 方法 (CepOrderableStream<TPayload>, Expression<Func<TPayload, TOrderKey>>)

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依 rankSelector 以遞減順序排序輸入資料流。

命名空間:   Microsoft.ComplexEventProcessing.Linq
組件:  Microsoft.ComplexEventProcessing (在 Microsoft.ComplexEventProcessing.dll 中)

語法

public static CepOrderedStream<TPayload> OrderByDescending<TPayload, TOrderKey>(
    this CepOrderableStream<TPayload> source,
    Expression<Func<TPayload, TOrderKey>> rankSelector
)

public:
generic<typename TPayload, typename TOrderKey>
[ExtensionAttribute]
static CepOrderedStream<TPayload>^ OrderByDescending(
    CepOrderableStream<TPayload>^ source,
    Expression<Func<TPayload, TOrderKey>^>^ rankSelector
)

static member OrderByDescending<'TPayload, 'TOrderKey> : 
        source:CepOrderableStream<'TPayload> *
        rankSelector:Expression<Func<'TPayload, 'TOrderKey>> -> CepOrderedStream<'TPayload>

<ExtensionAttribute>
Public Shared Function OrderByDescending(Of TPayload, TOrderKey) (
    source As CepOrderableStream(Of TPayload),
    rankSelector As Expression(Of Func(Of TPayload, TOrderKey))
) As CepOrderedStream(Of TPayload)

參數

  • source
    排序所依據的資料流來源。
  • rankSelector
    其值用於互相比較事件的運算式。

傳回值

Type: Microsoft.ComplexEventProcessing.Linq.CepOrderedStream<TPayload>

可以進一步排名的已排序資料流，例如，使用 Take()。

類型參數

  • TPayload
    輸入事件的裝載類型。
  • TOrderKey
    排序索引鍵的類型。

請參閱

CepStream 類別
Microsoft.ComplexEventProcessing.Linq 命名空間

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