Observable.MaxBy<TSource, TKey> Method (IObservable<TSource>, Func<TSource, TKey>, IComparer<TKey>)
Namespace: Microsoft.Phone.Reactive
Assembly: Microsoft.Phone.Reactive (in Microsoft.Phone.Reactive.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function MaxBy(Of TSource, TKey) ( _
source As IObservable(Of TSource), _
keySelector As Func(Of TSource, TKey), _
comparer As IComparer(Of TKey) _
) As IObservable(Of TSource)
public static IObservable<TSource> MaxBy<TSource, TKey>(
this IObservable<TSource> source,
Func<TSource, TKey> keySelector,
IComparer<TKey> comparer
)
[ExtensionAttribute]
public:
generic<typename TSource, typename TKey>
static IObservable<TSource>^ MaxBy(
IObservable<TSource>^ source,
Func<TSource, TKey>^ keySelector,
IComparer<TKey>^ comparer
)
static member MaxBy :
source:IObservable<'TSource> *
keySelector:Func<'TSource, 'TKey> *
comparer:IComparer<'TKey> -> IObservable<'TSource>
Type Parameters
- TSource
- TKey
Parameters
- source
Type: System.IObservable<TSource>
- keySelector
Type: System.Func<TSource, TKey>
- comparer
Type: System.Collections.Generic.IComparer<TKey>
Return Value
Type: System.IObservable<TSource>
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
Version Information
.NET for Windows Phone apps
Supported in: Windows Phone 8, Silverlight 8.1
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.