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Qbservable.FromAsyncPattern<T1, T2, T3, T4> Method (IQbservableProvider, Expression<Func<T1, T2, T3, T4, 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, T2, T3, T4, IQbservable<Unit>> FromAsyncPattern<T1, T2, T3, T4>(
	this IQbservableProvider provider,
	Expression<Func<T1, T2, T3, T4, AsyncCallback, Object, IAsyncResult>> begin,
	Expression<Action<IAsyncResult>> end
)

Type Parameters

T1

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

T2

The second type of function.

T3

The third type of function.

T4

The fourth type of function.

Parameters

provider
Type: System.Reactive.Linq.IQbservableProvider
The local Qbservable provider.
begin
Type: System.Linq.Expressions.Expression<Func<T1, T2, T3, T4, AsyncCallback, Object, IAsyncResult>>
The local Qbservable provider.
end
Type: System.Linq.Expressions.Expression<Action<IAsyncResult>>
The end invoke function.

Return Value

Type: System.Func<T1, T2, T3, T4, 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.
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