IWMSPlaylistParserCallback.OnWritePlaylist (Visual Basic .NET)

  • Article

The OnWritePlaylist method returns to the server the result of a WritePlaylist call.

IWMSPlaylistParserCallback.OnWritePlaylist(  hr As Int32,
  pBuffer As INSSBuffer,
  qwContext As UInt64
)

Arguments

Int32 specifying the results of a WritePlaylist call.

INSSBufferINSSBuffer Object (Visual Basic .NET) that contains the written playlist.

ulong containing a value defined by the server to identify which call to IWMSPlaylistParser.WritePlaylist the plug-in is responding to when it calls OnWritePlaylist. You must pass this value back unaltered.

Return Value

This method does not return a value. If the plug-in uses the IWMSEventLogIWMSEventLog Object (Visual Basic .NET) to log error information, it is recommended that it send NS_E_PLUGIN_ERROR_REPORTED (0xC00D157D) to the server in the lHr parameter. Typically, the server attempts to make plug-in error information available to the server object model, the Windows Event Viewer, and the troubleshooting list in the details pane of the Windows Media Services MMC. However, if the plug-in uses the IWMSEventLog object to log custom error information to the Windows Event Viewer, sending NS_E_PLUGIN_ERROR_REPORTED stops the server from also logging to the event viewer. For more information about plug-in error information, see Identifying Plug-in Errors.

Remarks

This method is implemented by the server and called by the plug-in.

Example

Public Sub WritePlaylist( _
    ByVal pPlaylist As interop_msxml.IXMLDOMDocument, _
    ByVal pCallback As IWMSPlaylistParserCallback, _
    ByVal qwContext As System.UInt64) _
    Implements IWMSPlaylistParser.WritePlaylist

    Try
        ' TODO: Write the playlist.

        pCallback.OnWritePlaylist(S_OK, pINSSBuffer, qwContext)
    Catch e As Exception
        pCallback.OnWritePlaylist(E_FAIL, pINSSBuffer, qwContext)
    End Try
End Sub

Requirements

Reference: Add a reference to Microsoft.WindowsMediaServices.

Namespace: Microsoft.WindowsMediaServices.Interop.

Assembly: Microsoft.WindowsMediaServices.dll.

Library: WMSServerTypeLib.dll.

Platform: Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition; Windows Server 2008.

See Also

Concepts

IWMSPlaylistParserCallback Object (Visual Basic .NET)