Ensures that all the files posted to this server with the PostFiles function are actually written to the Internet server.
Syntax
HRESULT Commit(void);
Return Value
Returns S_OK if successful, or an error code otherwise.
Remarks
If a callback function has been specified to the service provider with a previous call into SetProgressUpdateProc, the service provider should call the callback function while committing. See the description of SetProgressUpdateProc for more information.