The on start.

Namespace: CrawlerLib.Engine.OperationProcessor.Async
Assembly: CrawlerLib.Engine (in CrawlerLib.Engine.dll)

Syntax

Visual Basic

Protected MustOverride Function OnStart( _
   ByVal asyncCallback As AsyncCallback, _
   ByVal asyncState As AsyncOperationState _
) As IAsyncResult

C#

protected abstract IAsyncResult OnStart(
   AsyncCallbackasyncCallback,
   AsyncOperationStateasyncState
)

C++

protected: 
virtual IAsyncResult^ OnStart(
   AsyncCallbackasyncCallback,
   AsyncOperationStateasyncState
) abstract 

JScript

protected abstract function OnStart(
    asyncCallback : AsyncCallback,
    asyncState : AsyncOperationState
) : IAsyncResult;

Parameters

asyncCallback

The async Callback.

asyncState

The async state.

 

 

Return Value

The IAsyncResult .

 

Remarks

If OnStart has started an async operation it MUST return the async result. Don't execute code that may raise    exceptions after you started an async operation. It is not possible to process that in the right manner.

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

 

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0
 

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
 

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0
 

XNA Framework

Supported in: 3.0, 2.0, 1.0
 

 

See Also