I tried exporting data selecting it from postgres with spatial query. The argument does work within osGeo4W Shell but I'm trying to use it from my C# console app. Everything seems too work until I add the spatial part. I have no idea what could be the issue here, but I'm still a beginner. Can someone take a look and help me figure out what went wrong here?

// assemble input
string output = "C:\\Users\\martijn\\Documents\\output.gpkg";
string connectionPostgis = " PG:\"dbname = db_naam host = localhost user = postgres password = password port = 5432 \" ";
string sqlRequest = "-sql \"SELECT naam, geom,ST_Distance(ST_GeographyFromText(\'POINT(4.9235515 52.3770089)\'),geom) FROM public.table \"";
string argument ="ogr2ogr -f \"GPKG\" " + output + connectionPostgis + sqlRequest;
// process
Process process = new Process();
process.StartInfo.FileName = "C:\\OSGeo4W64\\OSGeo4W.bat";
process.StartInfo.Arguments = argument;

  • 1
    did you try printing sqlRequest and argument to console? to check if the escaping is correct
    – prusswan
    Mar 19, 2021 at 18:48
  • and after printing the command, try to run it in the database directly, so you can see the error message
    – JGH
    Mar 19, 2021 at 20:18
  • fist I tried the sqlRequest in pgAdmin 4v4 next in the command line. they seems to work without issue or error. (the comma was not the problem...)
    – Martijn
    Mar 22, 2021 at 7:06

1 Answer 1


The point is invalid. Remove the coma between the longitude and the latitude

ST_GeographyFromText(\'POINT(4.9235515 52.3770089)\')

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