MinBy(TSource, TKey) Method (IQbservable(TSource), Expression(Func(TSource, TKey)), IComparer(TKey))

Qbservable::MinBy<TSource, TKey> Method (IQbservable<TSource>, Expression<Func<TSource, TKey>>, IComparer<TKey>)

Returns the elements in a queryable observable sequence with the minimum key value according to the specified comparer.

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

[ExtensionAttribute]
public:
generic<typename TSource, typename TKey>
static IQbservable<IList<TSource>^>^ MinBy(
	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 minimum 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 minimum key value according to the specified comparer.

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 https://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.
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