AsyncEnumerable.ToDictionaryAsync 方法

定義

命名空間:: System.Linq

組件:: System.Linq.AsyncEnumerable.dll

套件:: System.Linq.AsyncEnumerable v11.0.0-rc.1.26425.128

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

多載

名稱	Description
ToDictionaryAsync<TKey,TValue>(IAsyncEnumerable<KeyValuePair<TKey,TValue>>, IEqualityComparer<TKey>, CancellationToken)	根據指定的金鑰比較器，從建立 IAsyncEnumerable<T> aDictionary<TKey,TValue>。
ToDictionaryAsync<TKey,TValue>(IAsyncEnumerable<ValueTuple<TKey,TValue>>, IEqualityComparer<TKey>, CancellationToken)	根據指定的金鑰比較器，從建立 IAsyncEnumerable<T> aDictionary<TKey,TValue>。
ToDictionaryAsync<TSource,TKey,TElement>(IAsyncEnumerable<TSource>, Func<TSource,CancellationToken,ValueTask<TKey>>, Func<TSource, CancellationToken,ValueTask<TElement>>, IEqualityComparer<TKey>, CancellationToken)	根據指定的鍵選擇器與元素選擇器功能，從IAsyncEnumerable<T>「/>」建立 aDictionary<TKey,TValue>。
ToDictionaryAsync<TSource,TKey,TElement>(IAsyncEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer<TKey>, CancellationToken)	根據指定的鍵選擇器與元素選擇器功能，從IAsyncEnumerable<T>「/>」建立 aDictionary<TKey,TValue>。
ToDictionaryAsync<TSource,TKey>(IAsyncEnumerable<TSource>, Func<TSource, CancellationToken,ValueTask<TKey>>, IEqualityComparer<TKey>, CancellationToken)	根據指定的索引鍵選取器函式，從 Dictionary<TKey,TValue> 建立 IAsyncEnumerable<T>。
ToDictionaryAsync<TSource,TKey>(IAsyncEnumerable<TSource>, Func<TSource,TKey>, IEqualityComparer<TKey>, CancellationToken)	根據指定的索引鍵選取器函式，從 Dictionary<TKey,TValue> 建立 IAsyncEnumerable<T>。

ToDictionaryAsync<TKey,TValue>(IAsyncEnumerable<KeyValuePair<TKey,TValue>>, IEqualityComparer<TKey>, CancellationToken)

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

根據指定的金鑰比較器，從建立 IAsyncEnumerable<T> aDictionary<TKey,TValue>。

public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TValue>> ToDictionaryAsync<TKey,TValue>(this System.Collections.Generic.IAsyncEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>> source, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);

static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<System.Collections.Generic.KeyValuePair<'Key, 'Value>> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Value>>

<Extension()>
Public Function ToDictionaryAsync(Of TKey, TValue) (source As IAsyncEnumerable(Of KeyValuePair(Of TKey, TValue)), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TValue))

類型參數

TKey

來自元素的鍵型 source

TValue

來自元素的值型態 source

參數

source: IAsyncEnumerable<KeyValuePair<TKey,TValue>>

要 IAsyncEnumerable<T> 創造一個 Dictionary<TKey,TValue> 來源。

comparer: IEqualityComparer<TKey>

還有 IEqualityComparer<T> 比較鑰匙。

cancellationToken: CancellationToken

CancellationToken他們需要監控取消申請。預設值為 None。

傳回

ValueTask<Dictionary<TKey,TValue>>

包含來自 source的鍵與值的 ADictionary<TKey,TValue>。

例外狀況

ArgumentNullException

source 是 null。

ArgumentException

source 包含一個或多個重複金鑰（透過回傳的任務）。

適用於

ToDictionaryAsync<TKey,TValue>(IAsyncEnumerable<ValueTuple<TKey,TValue>>, IEqualityComparer<TKey>, CancellationToken)

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

根據指定的金鑰比較器，從建立 IAsyncEnumerable<T> aDictionary<TKey,TValue>。

public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TValue>> ToDictionaryAsync<TKey,TValue>(this System.Collections.Generic.IAsyncEnumerable<(TKey Key, TValue Value)> source, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);

static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<ValueTuple<'Key, 'Value>> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Value>>

<Extension()>
Public Function ToDictionaryAsync(Of TKey, TValue) (source As IAsyncEnumerable(Of ValueTuple(Of TKey, TValue)), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TValue))

類型參數

TKey

來自元素的鍵型 source

TValue

來自元素的值型態 source

參數

source: IAsyncEnumerable<ValueTuple<TKey,TValue>>

要 IAsyncEnumerable<T> 創造一個 Dictionary<TKey,TValue> 來源。

comparer: IEqualityComparer<TKey>

還有 IEqualityComparer<T> 比較鑰匙。

cancellationToken: CancellationToken

CancellationToken他們需要監控取消申請。預設值為 None。

傳回

ValueTask<Dictionary<TKey,TValue>>

包含來自 source的鍵與值的 ADictionary<TKey,TValue>。

例外狀況

ArgumentNullException

source 是 null。

ArgumentException

source 包含一個或多個重複金鑰（透過回傳的任務）。

適用於

ToDictionaryAsync<TSource,TKey,TElement>(IAsyncEnumerable<TSource>, Func<TSource,CancellationToken,ValueTask<TKey>>, Func<TSource, CancellationToken,ValueTask<TElement>>, IEqualityComparer<TKey>, CancellationToken)

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

根據指定的鍵選擇器與元素選擇器功能，從IAsyncEnumerable<T>「/>」建立 aDictionary<TKey,TValue>。

public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TElement>> ToDictionaryAsync<TSource,TKey,TElement>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask<TKey>> keySelector, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask<TElement>> elementSelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);

static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask<'Key>> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask<'Element>> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Element>>

<Extension()>
Public Function ToDictionaryAsync(Of TSource, TKey, TElement) (source As IAsyncEnumerable(Of TSource), keySelector As Func(Of TSource, CancellationToken, ValueTask(Of TKey)), elementSelector As Func(Of TSource, CancellationToken, ValueTask(Of TElement)), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TElement))

類型參數

TSource

來源元素的類型。

TKey

由返回 keySelector的金鑰類型。

TElement

由返回 elementSelector的值類型。

參數

source: IAsyncEnumerable<TSource>

一個 IAsyncEnumerable<T> 創造一個 Dictionary<TKey,TValue> 。

keySelector: Func<TSource,CancellationToken,ValueTask<TKey>>

一個用來從每個元素中提取鍵值的函式。

elementSelector: Func<TSource,CancellationToken,ValueTask<TElement>>

一個轉換函數，從每個元素產生結果元素值。

comparer: IEqualityComparer<TKey>

還有 IEqualityComparer<T> 比較鑰匙。

cancellationToken: CancellationToken

CancellationToken他們需要監控取消申請。預設值為 None。

傳回

ValueTask<Dictionary<TKey,TElement>>

Dictionary<TKey,TValue> A 包含從輸入序列中選擇的值TElement。

例外狀況

ArgumentNullException

elementSelector 是 null。

ArgumentException

source 包含一個或多個重複金鑰（透過回傳的任務）。

適用於

ToDictionaryAsync<TSource,TKey,TElement>(IAsyncEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer<TKey>, CancellationToken)

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

根據指定的鍵選擇器與元素選擇器功能，從IAsyncEnumerable<T>「/>」建立 aDictionary<TKey,TValue>。

public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TElement>> ToDictionaryAsync<TSource,TKey,TElement>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);

static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, 'Key> * Func<'Source, 'Element> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Element>>

<Extension()>
Public Function ToDictionaryAsync(Of TSource, TKey, TElement) (source As IAsyncEnumerable(Of TSource), keySelector As Func(Of TSource, TKey), elementSelector As Func(Of TSource, TElement), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TElement))

類型參數

TSource

來源元素的類型。

TKey

由返回 keySelector的金鑰類型。

TElement

由返回 elementSelector的值類型。

參數

source: IAsyncEnumerable<TSource>

一個 IAsyncEnumerable<T> 創造一個 Dictionary<TKey,TValue> 。

keySelector: Func<TSource,TKey>

一個用來從每個元素中提取鍵值的函式。

elementSelector: Func<TSource,TElement>

一個轉換函數，從每個元素產生結果元素值。

comparer: IEqualityComparer<TKey>

還有 IEqualityComparer<T> 比較鑰匙。

cancellationToken: CancellationToken

CancellationToken他們需要監控取消申請。預設值為 None。

傳回

ValueTask<Dictionary<TKey,TElement>>

Dictionary<TKey,TValue> A 包含從輸入序列中選擇的值TElement。

例外狀況

ArgumentNullException

elementSelector 是 null。

ArgumentException

source 包含一個或多個重複金鑰（透過回傳的任務）。

適用於

ToDictionaryAsync<TSource,TKey>(IAsyncEnumerable<TSource>, Func<TSource, CancellationToken,ValueTask<TKey>>, IEqualityComparer<TKey>, CancellationToken)

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

根據指定的索引鍵選取器函式，從 Dictionary<TKey,TValue> 建立 IAsyncEnumerable<T>。

public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TSource>> ToDictionaryAsync<TSource,TKey>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask<TKey>> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);

static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask<'Key>> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Source>>

<Extension()>
Public Function ToDictionaryAsync(Of TSource, TKey) (source As IAsyncEnumerable(Of TSource), keySelector As Func(Of TSource, CancellationToken, ValueTask(Of TKey)), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TSource))

類型參數

TSource

來源元素的類型。

TKey

由返回 keySelector的金鑰類型。

參數

source: IAsyncEnumerable<TSource>

一個 IAsyncEnumerable<T> 創造一個 Dictionary<TKey,TValue> 。

keySelector: Func<TSource,CancellationToken,ValueTask<TKey>>

一個用來從每個元素中提取鍵值的函式。

comparer: IEqualityComparer<TKey>

還有 IEqualityComparer<T> 比較鑰匙。

cancellationToken: CancellationToken

CancellationToken他們需要監控取消申請。預設值為 None。

傳回

ValueTask<Dictionary<TKey,TSource>>

包含鍵與值的 A Dictionary<TKey,TValue> 。

例外狀況

ArgumentNullException

keySelector 是 null。

ArgumentException

source 包含一個或多個重複金鑰（透過回傳的任務）。

適用於

ToDictionaryAsync<TSource,TKey>(IAsyncEnumerable<TSource>, Func<TSource,TKey>, IEqualityComparer<TKey>, CancellationToken)

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

來源:: ToDictionaryAsync.cs

根據指定的索引鍵選取器函式，從 Dictionary<TKey,TValue> 建立 IAsyncEnumerable<T>。

public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TSource>> ToDictionaryAsync<TSource,TKey>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,TKey> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);

static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, 'Key> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Source>>

<Extension()>
Public Function ToDictionaryAsync(Of TSource, TKey) (source As IAsyncEnumerable(Of TSource), keySelector As Func(Of TSource, TKey), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TSource))