IWMSDataSourcePlugin.GetDataSourceAttributes (Visual Basic .NET)

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IWMSDataSourcePlugin.GetDataSourceAttributes (Visual Basic .NET)

The server calls the GetDataSourceAttributes method to retrieve the attribute flags associated with a data container.

Syntax

Parameters

pdwFlags

Reference to a UInt32 containing a member of the WMS_DATA_CONTAINER_ATTRIBUTES enumeration type. This must be either zero or the following value.

Value Description
WMS_DATA_CONTAINER_SUPPORTS_ENUMERATION The data container can be enumerated.

Return Values

This method does not return a value. To report an error, the plug-in can throw a COMException object to the server. If the plug-in uses the IWMSEventLog object to log error information, it is recommended that it throw NS_E_PLUGIN_ERROR_REPORTED (0xC00D157D). 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 send custom error information to the Windows Event Viewer, throwing 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

Only file system data source plug-ins can support enumeration. File system plug-ins can be used to source multiple media files from directories.

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; and Windows Server 2008.

See Also

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