public override void BeginRead()
{
try
{
IUniversalVectorDataReader udr = VectorDataReaderFactory.GetUniversalDataReader(_fileUrl);
_reader = udr as IVectorFeatureDataReader;
_reader.SetArgsOfLeveling(_argOfLeveling);
_readIsFinished = false;
}
finally
{
if (GlobalCacher.VectorDataGlobalCacher != null &&
GlobalCacher.VectorDataGlobalCacher.IsEnabled &&
GlobalCacher.VectorDataGlobalCacher.IsGllPrjOfActiveViewer)
{
GlobalCacher.VectorDataGlobalCacher.Request(_fileUrl);
}
}
}