// Perform any specific actions to release the handle in the ReleaseHandle method.
// Often, you need to use Pinvoke to make a call into the Win32 API to release the
// handle. In this case, however, we can use the Marshal class to release the unmanaged memory.
override protected bool ReleaseHandle()
{
// If the handle was set, free it. Return success.
if (!IsInvalid)
{
// NOTE: We should also ZERO out the memory allocated to the handle, before free'ing it
// so there are no traces of the sensitive data left in memory.
NativeCode.CredFree(handle);
// Mark the handle as invalid for future users.
SetHandleAsInvalid();
return(true);
}
// Return false.
return(false);
}
