IWMSCacheProxy.FindCacheItem (C#)

IWMSCacheProxy.FindCacheItem (C#)

The FindCacheItem method is called by the server to retrieve an IWMSCacheItemDescriptor object that contains information about a specific cache item.

Syntax

Parameters

bstrOriginUrl

[in] string containing the origin URL.

ppCacheItemDescriptor

[out] Reference to an IWMSCacheItemDescriptor object containing the size, version number, and expiration date of a specific cache item.

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.

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;

}

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

• IWMSCacheProxy Object (C#)