Yes, I'm using the development version (1.9) from gisinternals.com/sdk.

I need this version because I'm taking advantage of its ability to read/write 
File Geodatabases.


From: Kyle Shannon [mailto:kshan...@gcs-research.com]
Sent: Monday, December 05, 2011 10:09 AM
To: Pouliot, Christopher (DNR); gdal-dev@lists.osgeo.org
Subject: RE: Editing KML files using ogr_csharp.dll

Can you report your gdal version and where you got it from?  Is it from 
gisinternals.com/sdk, or did you build it yourself?

From: Pouliot, Christopher (DNR) [mailto:christopher.poul...@state.mn.us]
Sent: Monday, December 05, 2011 9:04 AM
To: Kyle Shannon; gdal-dev@lists.osgeo.org
Subject: RE: Editing KML files using ogr_csharp.dll

Thanks for the response Kyle.

  I do use the CreateDataSource() to create a new KML.  But am unable to open 
an existing KML for editing using the Open() code I specified below.

Chris

From: Kyle Shannon [mailto:kshan...@gcs-research.com]
Sent: Monday, December 05, 2011 9:54 AM
To: Pouliot, Christopher (DNR); gdal-dev@lists.osgeo.org
Subject: RE: Editing KML files using ogr_csharp.dll

Chris,

I don' know OGR very well, but I see a few issues.  I also am not sure about 
the c# bindings, I believe they are pretty complete though.

'''OSGeo.OGR.Driver drv = Ogr.GetDriverByName("KML");
DataSource ds = drv.Open("c:\\temp\\mykml.kml", 1);'''

Open() opens existing files, you need to use driver->CreateDatasource() to 
create datasets.  Open() opens files for editing.  If mykml.kml exists, use 
Open().

see http://gdal.org/ogr/ogr_apitut.html for information on using OGR to 
read/write data

'''Also, when creating a KML file from scratch is there a way to map the Name 
and Description fields to my existing fields so that the Name and Description 
appear in Google Earth?'''

See http://gdal.org/ogr/drv_kml.html for this, it appears to be possible.

There is also the libkml driver: http://gdal.org/ogr/drv_libkml.html

kss

From: gdal-dev-boun...@lists.osgeo.org 
[mailto:gdal-dev-boun...@lists.osgeo.org] On Behalf Of Pouliot, Christopher 
(DNR)
Sent: Monday, December 05, 2011 7:51 AM
To: gdal-dev@lists.osgeo.org
Subject: [gdal-dev] Editing KML files using ogr_csharp.dll

Hello All,

I have a C# application that uses OGR_CSHARP.DLL to read/write KML files.  I'm 
able to read from KML files fine.  I'm able to create a new KML file and write 
to it fine.  I am unable, however, to open a KML file to edit.  I'd like to be 
able to append a new layer (folder) onto an existing KML file.  I've tried both 
of the following code snippets:

//This returns NULL
OSGeo.OGR.Driver drv = Ogr.GetDriverByName("KML");
DataSource ds = drv.Open("c:\\temp\\mykml.kml", 1);


//This returns NULL
DataSource ds = Ogr.Open("c:\\temp\\mykml.kml", 1);


I'm able to use this code to edit File Geodatabases and Shapefiles but not KML.



Also, when creating a KML file from scratch is there a way to map the Name and 
Description fields to my existing fields so that the Name and Description 
appear in Google Earth?


Thanks,

Chris

Chris Pouliot
GIS Application Developer
Minnesota Department of Natural Resources
christopher.poul...@state.mn.us<mailto:christopher.poul...@state.mn.us>
(651) 259-5491


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