Qbservable.FromEventPattern<TEventArgs> Method (IQbservableProvider, Object, String)
Converts a .NET event, conforming to the standard .NET event pattern, to an observable sequence, using reflection to find an instance event.
Namespace: System.Reactive.Linq
Assembly: System.Reactive.Providers (in System.Reactive.Providers.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function FromEventPattern(Of TEventArgs As EventArgs) ( _
provider As IQbservableProvider, _
target As Object, _
eventName As String _
) As IQbservable(Of EventPattern(Of TEventArgs))
'Usage
Dim provider As IQbservableProvider
Dim target As Object
Dim eventName As String
Dim returnValue As IQbservable(Of EventPattern(Of TEventArgs))
returnValue = provider.FromEventPattern(target, _
eventName)
public static IQbservable<EventPattern<TEventArgs>> FromEventPattern<TEventArgs>(
this IQbservableProvider provider,
Object target,
string eventName
)
where TEventArgs : EventArgs
[ExtensionAttribute]
public:
generic<typename TEventArgs>
where TEventArgs : EventArgs
static IQbservable<EventPattern<TEventArgs>^>^ FromEventPattern(
IQbservableProvider^ provider,
Object^ target,
String^ eventName
)
static member FromEventPattern :
provider:IQbservableProvider *
target:Object *
eventName:string -> IQbservable<EventPattern<'TEventArgs>> when 'TEventArgs : EventArgs
JScript does not support generic types and methods.
Type Parameters
- TEventArgs
The type for the event.
Parameters
- provider
Type: System.Reactive.Linq.IQbservableProvider
The local Qbservable provider.
- target
Type: System.Object
Th object instance that exposes the event to convert.
- eventName
Type: System.String
The name of the event to convert.
Return Value
Type: System.Reactive.Linq.IQbservable<EventPattern<TEventArgs>>
The queryable observable sequence that contains data representations of invocations of the underlying .NET event.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservableProvider. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .