Queryable.AggregateBy Method
Definition
Important
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Overloads
AggregateBy<TSource,TKey,TAccumulate>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TKey,TAccumulate>>, Expression<Func<TAccumulate, TSource,TAccumulate>>, IEqualityComparer<TKey>)
- Source:
- Queryable.cs
public static System.Linq.IQueryable<System.Collections.Generic.KeyValuePair<TKey,TAccumulate>> AggregateBy<TSource,TKey,TAccumulate> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector, System.Linq.Expressions.Expression<Func<TKey,TAccumulate>> seedSelector, System.Linq.Expressions.Expression<Func<TAccumulate,TSource,TAccumulate>> func, System.Collections.Generic.IEqualityComparer<TKey>? keyComparer = default);
static member AggregateBy : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> * System.Linq.Expressions.Expression<Func<'Key, 'Accumulate>> * System.Linq.Expressions.Expression<Func<'Accumulate, 'Source, 'Accumulate>> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Linq.IQueryable<System.Collections.Generic.KeyValuePair<'Key, 'Accumulate>>
<Extension()>
Public Function AggregateBy(Of TSource, TKey, TAccumulate) (source As IQueryable(Of TSource), keySelector As Expression(Of Func(Of TSource, TKey)), seedSelector As Expression(Of Func(Of TKey, TAccumulate)), func As Expression(Of Func(Of TAccumulate, TSource, TAccumulate)), Optional keyComparer As IEqualityComparer(Of TKey) = Nothing) As IQueryable(Of KeyValuePair(Of TKey, TAccumulate))
Type Parameters
- TSource
- TKey
- TAccumulate
Parameters
- source
- IQueryable<TSource>
- keySelector
- Expression<Func<TSource,TKey>>
- seedSelector
- Expression<Func<TKey,TAccumulate>>
- func
- Expression<Func<TAccumulate,TSource,TAccumulate>>
- keyComparer
- IEqualityComparer<TKey>
Returns
IQueryable<KeyValuePair<TKey,TAccumulate>>
Applies to
AggregateBy<TSource,TKey,TAccumulate>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, TAccumulate, Expression<Func<TAccumulate,TSource,TAccumulate>>, IEqualityComparer<TKey>)
- Source:
- Queryable.cs
public static System.Linq.IQueryable<System.Collections.Generic.KeyValuePair<TKey,TAccumulate>> AggregateBy<TSource,TKey,TAccumulate> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector, TAccumulate seed, System.Linq.Expressions.Expression<Func<TAccumulate,TSource,TAccumulate>> func, System.Collections.Generic.IEqualityComparer<TKey>? keyComparer = default);
static member AggregateBy : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> * 'Accumulate * System.Linq.Expressions.Expression<Func<'Accumulate, 'Source, 'Accumulate>> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Linq.IQueryable<System.Collections.Generic.KeyValuePair<'Key, 'Accumulate>>
<Extension()>
Public Function AggregateBy(Of TSource, TKey, TAccumulate) (source As IQueryable(Of TSource), keySelector As Expression(Of Func(Of TSource, TKey)), seed As TAccumulate, func As Expression(Of Func(Of TAccumulate, TSource, TAccumulate)), Optional keyComparer As IEqualityComparer(Of TKey) = Nothing) As IQueryable(Of KeyValuePair(Of TKey, TAccumulate))
Type Parameters
- TSource
- TKey
- TAccumulate
Parameters
- source
- IQueryable<TSource>
- keySelector
- Expression<Func<TSource,TKey>>
- seed
- TAccumulate
- func
- Expression<Func<TAccumulate,TSource,TAccumulate>>
- keyComparer
- IEqualityComparer<TKey>
Returns
IQueryable<KeyValuePair<TKey,TAccumulate>>
Applies to
GitHub पर हमारे साथ सहयोग करें
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प्रतिक्रिया
https://aka.ms/ContentUserFeedback.
जल्द आ रहा है: 2024 के दौरान हम सामग्री के लिए फीडबैक तंत्र के रूप में GitHub मुद्दों को चरणबद्ध तरीके से समाप्त कर देंगे और इसे एक नई फीडबैक प्रणाली से बदल देंगे. अधिक जानकारी के लिए, देखें:के लिए प्रतिक्रिया सबमिट करें और देखें