ParallelEnumerable.ToDictionary Method (System.Linq)
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
public:
generic <typename TSource, typename TKey, typename TElement>
[System::Runtime::CompilerServices::Extension]
static System::Collections::Generic::Dictionary<TKey, TElement> ^ ToDictionary(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, TKey> ^ keySelector, Func<TSource, TElement> ^ elementSelector, System::Collections::Generic::IEqualityComparer<TKey> ^ comparer);public static System.Collections.Generic.Dictionary<TKey,TElement> ToDictionary<TSource,TKey,TElement>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, System.Collections.Generic.IEqualityComparer<TKey> comparer);public static System.Collections.Generic.Dictionary<TKey,TElement> ToDictionary<TSource,TKey,TElement>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer);static member ToDictionary : System.Linq.ParallelQuery<'Source> * Func<'Source, 'Key> * Func<'Source, 'Element> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Collections.Generic.Dictionary<'Key, 'Element><Extension()>
Public Function ToDictionary(Of TSource, TKey, TElement) (source As ParallelQuery(Of TSource), keySelector As Func(Of TSource, TKey), elementSelector As Func(Of TSource, TElement), comparer As IEqualityComparer(Of TKey)) As Dictionary(Of TKey, TElement)Type Parameters
- TSource
The type of the elements of source.
- TKey
The type of the key returned by keySelector.
- TElement
The type of the value returned by elementSelector.
Parameters
- keySelector
- Func<TSource,TKey>
A function to extract a key from each element.
- elementSelector
- Func<TSource,TElement>
A transform function to produce a result element value from each element.
Returns
A Dictionary<TKey,TValue> that contains values of type TElement selected from the input sequence.
Exceptions
source or keySelector or elementSelector is a null reference (Nothing in Visual Basic).
keySelector produces a key that is a null reference (Nothing in Visual Basic). -or- keySelector produces duplicate keys for two elements. -or- One or more exceptions occurred during the evaluation of the query.