Qbservable.FromAsyncPattern<T1> Method (IQbservableProvider, Expression<Func<T1, AsyncCallback, Object, IAsyncResult>>, Expression<Action<IAsyncResult>>)

Converts a Begin/End invoke function pair into an asynchronous function.

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

public static Func<T1, IQbservable<Unit>> FromAsyncPattern<T1>(
	this IQbservableProvider provider,
	Expression<Func<T1, AsyncCallback, Object, IAsyncResult>> begin,
	Expression<Action<IAsyncResult>> end

Type Parameters


The first type of function.


Type: System.Reactive.Linq.IQbservableProvider
The local Qbservable provider.
Type: System.Linq.Expressions.Expression<Func<T1, AsyncCallback, Object, IAsyncResult>>
The begin invoke function.
Type: System.Linq.Expressions.Expression<Action<IAsyncResult>>
The end invoke function.

Return Value

Type: System.Func<T1, IQbservable<Unit>>
A Begin/End invoke function pair.

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 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.