RE: [gdal-dev] ogr2ogr C#

[Randy George]

Or do something ugly like use a .asmx to call your ogr2ogr cmdline as a
Process:

 

using System;

using System.Web.Services;

using System.Text;

using System.IO;

using System.Diagnostics;

using System.Threading;

using System.Security.Permissions;

 

[WebService(Namespace = "http://www.myserver.com/ShpView";)]

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

[System.Web.Script.Services.ScriptService]

[SecurityPermissionAttribute(SecurityAction.LinkDemand, Unrestricted =
true)]

 

public class RunTranslate : System.Web.Services.WebService {

    private static string basepath = "E:/ShpView/";

    private static string pass = "pass";

    private static string db = "DBname";

 

    public RunTranslate () {

    }

 

    private delegate string StringDelegate();

 

    [WebMethod]

    public string PostGISLoadCommand(string shp, string epsg)

    {

        string fileName = "E:/ShpView/ogr/bin/ogr2ogr";

        string arguments = "-f PostgreSQL PG:\"user=user dbname="+db+"
host=localhost password="+pass+" port=5432\" " + basepath +
"/shpview/data/shape/" + shp + ".shp -a_srs \"" + epsg + "\" -overwrite";

        return Run(fileName, arguments);

    }

 

    private static string Run(string fileName, string arguments)

    {

        string results = "";

        string error = "";

        Process cmdLineProcess = new Process();

        using (cmdLineProcess)

        {

            cmdLineProcess.StartInfo.FileName = fileName;

            cmdLineProcess.StartInfo.Arguments = arguments;

            cmdLineProcess.StartInfo.UseShellExecute = false;

            cmdLineProcess.StartInfo.CreateNoWindow = true;

            cmdLineProcess.StartInfo.RedirectStandardOutput = true;

            cmdLineProcess.StartInfo.RedirectStandardError = true;

 

            if (cmdLineProcess.Start())

            {

                StringDelegate outputStreamAsyncReader = new
StringDelegate(cmdLineProcess.StandardOutput.ReadToEnd);

                StringDelegate errorStreamAsyncReader = new
StringDelegate(cmdLineProcess.StandardError.ReadToEnd);

                IAsyncResult outAR =
outputStreamAsyncReader.BeginInvoke(null, null);

                IAsyncResult errAR =
errorStreamAsyncReader.BeginInvoke(null, null);

                if (Thread.CurrentThread.GetApartmentState() ==
ApartmentState.STA)

                {

                    while (!(outAR.IsCompleted && errAR.IsCompleted))

                    {

                        Thread.Sleep(10);

                    }

                }

                else

                {

                    WaitHandle[] arWaitHandles = new WaitHandle[2];

                    arWaitHandles[0] = outAR.AsyncWaitHandle;

                    arWaitHandles[1] = errAR.AsyncWaitHandle;

 

                    if (!WaitHandle.WaitAll(arWaitHandles))

                    {

                        error = String.Format("Command line aborted: {0}",
fileName);

                    }

                }

                results = outputStreamAsyncReader.EndInvoke(outAR);

                error = errorStreamAsyncReader.EndInvoke(errAR);

                if (!cmdLineProcess.HasExited)

                {

                    cmdLineProcess.WaitForExit();

                }

            }

            else

            {

                error = String.Format("Could not start command line process:
{0}", fileName);

            }

            cmdLineProcess.Close();

        }

        return "Done: " + error + " " + results;

    }

}

 

 

From: gdal-dev-boun...@lists.osgeo.org
[mailto:gdal-dev-boun...@lists.osgeo.org] On Behalf Of Tamas Szekeres
Sent: Friday, March 27, 2009 3:39 AM
To: Sune Dogan, LIFA A/S
Cc: gdal-dev@lists.osgeo.org
Subject: Re: [gdal-dev] ogr2ogr C#

 

Hi,

You'll have to re-implement the logic in ogr2ogr.cpp by using the
ogr_csharp.dll.
Refer to the following thread for more information:

http://thread.gmane.org/gmane.comp.gis.gdal.devel/11789

Best regards,

Tamas




2009/3/27 Sune Dogan, LIFA A/S <s...@lifa.dk>

Hi 

Im developing a .NET C#  project and need to convert from GML to ESRI Shape 

Simply i want to run this command: 

ogr2ogr -skipfailures -f "ESRI Shapefile" C:\shapefile.shp c:\gmlfile.gml 

which works fine from the FWTool Command tool. 

But i just want to do i in my application, can any one help me? 

Thanks :) 

 


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