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IWMSDataSourcePluginCallback.OnOpenDataContainer (C#)

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IWMSDataSourcePluginCallback.OnOpenDataContainer (C#)

The OnOpenDataContainer method is called by a data source plug-in to respond when the server calls IWMSDataSourcePlugin.OpenDataContainer.

Syntax

Parameters

hr

int containing the result of the call to IWMSDataSourcePlugin.OpenDataContainer.

pDataContainer

IWMSDataContainer object identifying the data container opened by the plug-in.

qwContext

ulong containing a value defined by the server to identify which IWMSDataSourcePlugin.OpenDataContainer request the plug-in is responding to when it calls OnOpenDataContainer. The plug-in must pass this value back unaltered.

Return Values

This method does not return a value. If the plug-in uses the IWMSEventLog object 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

If the server requests that the data container be used for a shared broadcast by sending WMS_DATA_CONTAINER_SHARED_SOURCE in the dwFlags parameter when it calls IWMSDataSourcePlugin.OpenDataContainer, and the plug-in determines that the source cannot be shared, the plug-in can return COMADMIN_E_PRIVATE_ACCESSDENIED to the server in the hr parameter of OnOpenDataContainer. The COMADMIN_E_PRIVATE_ACCESSDENIED error is defined in the WinError.h file. A plug-in can indicate that a source must not be shared if, for example, a distribution connection requires authentication or the content must be personalized for a specific end user. When the server receives this error, it deletes the shared data path and creates an on-demand (non-shared) data path instead.

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

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