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Qbservable.MinBy(Of TSource, TKey) Method (IQbservable(Of TSource), Expression(Of Func(Of TSource, TKey)))

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

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

'Declaration
<ExtensionAttribute> _
Public Shared Function MinBy(Of TSource, TKey) ( _
	source As IQbservable(Of TSource), _
	keySelector As Expression(Of Func(Of TSource, TKey)) _
) As IQbservable(Of IList(Of TSource))
'Usage
Dim source As IQbservable(Of TSource)
Dim keySelector As Expression(Of Func(Of TSource, TKey))
Dim returnValue As IQbservable(Of IList(Of TSource))

returnValue = source.MinBy(keySelector)

Type Parameters

TSource

The type of source.

TKey

The type of key.

Parameters

source
Type: System.Reactive.Linq.IQbservable(Of TSource)
A queryable observable sequence to get the minimum elements for.
keySelector
Type: System.Linq.Expressions.Expression(Of Func(Of TSource, TKey))
The key selector function.

Return Value

Type: System.Reactive.Linq.IQbservable(Of IList(Of TSource))
The elements in a queryable observable sequence with the minimum key value.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable(Of 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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