IWMSCacheItemCollection.GetItem (Visual Basic .NET)
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IWMSCacheItemCollection.GetItem (Visual Basic .NET)
The GetItem method gets a cache descriptor object.
Syntax
Parameters
lIndex
[in] Integer containing the index into the collection.
ppCacheItemDescriptor
[out] Reference to an IWMSCacheItemDescriptor object.
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
The IWMSCacheItemDescriptor object retrieves the size, version number, expiration date, and URL of cached content.
Example Code
Imports Microsoft.WindowsMediaServices.Interop Imports System.Runtime.InteropServices Public Overloads Sub GetItem(ByVal index As Integer, ByRef CacheItem As IWMSCacheItemDescriptor) _ Implements IWMSCacheItemCollection.GetItem Dim DT As DataTable Dim Rows() As DataRow Try Rows = DT.Select() If index < 0 Or index >= Rows.Length Then Throw New COMException() End If CacheItem = New IWMSCacheItemDescriptorImpl(Me, Rows(index)) Catch Exc As Exception Throw New COMException() 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
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