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Qbservable.MaxBy<TSource, TKey> Method (IQbservable<TSource>, Expression<Func<TSource, TKey>>, IComparer<TKey>)

Returns the elements in a queryable observable sequence with the maximum key value.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive.Providers (in System.Reactive.Providers.dll)

public static IQbservable<IList<TSource>> MaxBy<TSource, TKey>(
	this IQbservable<TSource> source,
	Expression<Func<TSource, TKey>> keySelector,
	IComparer<TKey> comparer
)

Type Parameters

TSource

The type of source.

TKey

The type of key.

Parameters

source
Type: System.Reactive.Linq.IQbservable<TSource>
A queryable observable sequence to get the maximum elements for.
keySelector
Type: System.Linq.Expressions.Expression<Func<TSource, TKey>>
The key selector function.
comparer
Type: System.Collections.Generic.IComparer<TKey>
The comparer used to compare key values.

Return Value

Type: System.Reactive.Linq.IQbservable<IList<TSource>>
The elements in a queryable observable sequence with the maximum key value.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see http://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or http://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.
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