[fdo-users] .net and fdo

[Robert Fortin]

Hi Matteo!

I think the FDO tool box would enable you to copy shp to sdf . See http://fdotoolbox.googlecode.com/  There is also .NET code there to look into.

But in order to give you a very brief introduction to get going with .NET FDO...


-          In order to start you would generally reference OSGeo.Fdo.dll and OSGeo.Fdo.Common.dll (and then add as you need other ones)

-          You can get the list of available provider from OSGeo.FDO.ClientServices.FeatureAccessManager.GetProviderRegistry()

-          You will need to get the connection manager from

OSGeo.FDO.IconnectionManager mConnMgr=OSGeo.FDO.ClientServices.FeatureAccessManager.GetConnectionManager();


-          Once you know the provider you want to create a connection for, you call CreateConnection on the ConnectionManager for the specific provider named.

OSGeo.FDO.Connections.Iconnection mProvConn = mConnMgr.CreateConnection("OSGeo.SDF.3.3");


-          From the connection, you can get the connection Info object which has the list of connection parameters. This varies depending on the provider.

OSGeo.FDO.Connections.IConnectionInfo connInfo = mProvConn.ConnectionInfo;
OSGeo.FDO.Connections.IConnectionPropertyDictionary connPropDict = connInfo.ConnectionProperties;
connPropDict.SetProperty("File", "myfile");


-          Once you are done setting the connection parameters, open the connection

mProvConn.Open();


-          From that point on, you can create commands to described the schema

OSGeo.FDO.Commands.Schema.IDescribeSchema schemaCmd
mProvConn.CreateCommand(OSGeo.FDO.Commands.CommandType.CommandType_DescribeSchema);
OSGeo.FDO.Schema.FeatureSchemaCollection schemaCol = schemaCmd.Execute();


o   Or select/update/delete the data or to retrieve the schema.

      OSGeo.FDO.Commands.Feature.ISelect selCmd = (OSGeo.FDO.Commands.Feature.ISelect)(OSGeo.FDO.Commands.Feature.ISelectAggregates)mProvConn.CreateCommand(OSGeo.FDO.Commands.CommandType.CommandType_Select);
      selCmd.SetFeatureClassName("myclass");
      OSGeo.FDO.Commands.Feature.IReader myReader = selCmd.Execute();
      while (myReader.ReadNext())
      {
         string aStr = myReader.GetString("some_property");
      }

Hope this can get you started.

Robert

From: fdo-users-bounces at lists.osgeo.org [mailto:fdo-users-bounces at lists.osgeo.org] On Behalf Of Matteo
Sent: Tuesday, December 02, 2008 1:17 PM
To: fdo-users at lists.osgeo.org
Subject: [fdo-users] .net and fdo

Hi all, I would to create an application (vb.net or c#) that convert shp file to sdf 3. I'm new in fdo tecnology and I don't know the basic step for develep with FDO. For example: 1) How dll i must be reference in my .net project? 2) What is the connection string to connect to a shp file? I don't find some examples Regards Matteo
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