private bool HandleDiskOutput(IDatasource ds, OutputLayerInfo outputInfo)
{
string filename = outputInfo.Filename;
if (File.Exists(filename) && !outputInfo.Overwrite)
{
return(HandleOverwriteFailure());
}
bool result = SaveDatasource(ds, filename);
ds.Dispose();
outputInfo.Result = null;
if (!result)
{
return(false);
}
outputInfo.DatasourcePointer = new DatasourcePointer(filename);
if (outputInfo.AddToMap)
{
// don't report error if layer isn't added to the map
// user might cancel it because of projection mismatch
_layerService.AddLayersFromFilename(filename);
}
return(true);
}
private static bool SaveToTempDatasource(ITempFileService tempFileService, IDatasource ds)
{
// We can't the resulting shapefile directly, because it was created by background thread
// therefore is located in another apartment. This will cause creation of proxies and marshalling
// for COM, which in turn no always supported by implementation of particular classes in MapWinGIS.
// Therefore the best option we have is to save into temp file, open it, read into memory, delete the source.
string filename = tempFileService.GetTempFilename(".shp");
bool saved = SaveDatasource(ds, filename);
ds.Dispose();
if (!saved)
{
Logger.Current.Warn("Failed to save datasource to temp file.");
return(false);
}
return(true);
}