IWMSCacheProxy.FindCacheItem (C#)
The FindCacheItem method is called by the server to retrieve an IWMSCacheItemDescriptorIWMSCacheItemDescriptor Object (C#) that contains information about a specific cache item.
void IWMSCacheProxy.FindCacheItem(
string bstrOriginUrl,
ref IWMSCacheItemDescriptor ppCacheItemDescriptor
);
Arguments
[in] string containing the origin URL. |
|
[out] Reference to an IWMSCacheItemDescriptor object containing the size, version number, and expiration date of a specific cache item. |
Return Value
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 IWMSEventLogIWMSEventLog Object (C#) 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.
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.
Code Example
using Microsoft.WindowsMediaServices.Interop;
using System.Runtime.InteropServices;
// Minimal implementation.
void IWMSCacheProxy.FindCacheItem( string bstrOriginUrl ,
out IWMSCacheItemDescriptor ppCacheItemDescriptor )
{
try
{
ppCacheItemDescriptor = null;
}
catch
{
throw new COMException();
}
return;
}