IVssAsyncResult BeginPrepareForBackup( AsyncCallback userCallback, Object state )
Function BeginPrepareForBackup ( userCallback As AsyncCallback, state As Object ) As IVssAsyncResult
IVssAsyncResult^ BeginPrepareForBackup( AsyncCallback^ userCallback, Object^ state )
PrepareForBackup event, which is handled by each instance of each writer through the CVssWriter::OnPrepareBackup method.generates a
Before PrepareForBackup can be called, SetBackupState(Boolean, Boolean, VssBackupType, Boolean) must be called.
Pass the IVssAsyncResult value returned to the EndPrepareForBackup(IAsyncResult) method to release operating system resources used for this asynchronous operation. EndPrepareForBackup(IAsyncResult) must be called once for every call to . You can do this either by using the same code that called BeginPrepareForBackup or in a callback passed to BeginPrepareForBackup.