AddonDataHandler.BeginGetData Method

An implementation of this method initiates an asynchronous request to the data source.

Namespace:  Microsoft.Office.Visio.Server
Assembly:  Microsoft.Office.Visio.Server (in Microsoft.Office.Visio.Server.dll)

Syntax

'Declaration
Public MustOverride Function BeginGetData ( _
    context As HttpContext, _
    callback As AsyncCallback, _
    asyncState As Object _
) As IAsyncResult
'Usage
Dim instance As AddonDataHandler
Dim context As HttpContext
Dim callback As AsyncCallback
Dim asyncState As Object
Dim returnValue As IAsyncResult

returnValue = instance.BeginGetData(context, _
    callback, asyncState)

public abstract IAsyncResult BeginGetData(
    HttpContext context,
    AsyncCallback callback,
    Object asyncState
)

Parameters

• context
  Type: System.Web.HttpContext

  An HttpContext object that provides references to intrinsic server objects that are used to service HTTP requests.

• callback
  Type: System.AsyncCallback

  The AsyncCallback delegate to call when the asynchronous operation is complete.

• asyncState
  Type: System.Object

  Any extra data needed to process the request.

Return Value

Type: System.IAsyncResult
An IAsyncResult object that contains information about the status of the operation.

See Also

Reference

AddonDataHandler Class

AddonDataHandler Members

Microsoft.Office.Visio.Server Namespace