Npgsql/Geo: Add remarks about why Npgsql.GeoJSON isn't working

Author: amotl

by-language/csharp-npgsql/DemoProgram.cs

@@ -51,6 +51,8 @@ public static NpgsqlConnection GetConnection(string connString)
 
             // Enable PostGIS/GeoJSON Type Plugin.
             // https://www.npgsql.org/doc/types/geojson.html
+            // `NpgsqlDbType.Geometry` can not be used with CrateDB,
+            // see also https://github.com/npgsql/npgsql/issues/2411.
             // dataSourceBuilder.UseGeoJson();
 
             var dataSource = dataSourceBuilder.Build();

by-language/csharp-npgsql/DemoTypes.cs

@@ -364,8 +364,9 @@ public async Task InsertGeoJsonTyped()
              *
              *       System.NotSupportedException : The NpgsqlDbType 'Geometry' isn't present in your
              *       database. You may need to install an extension or upgrade to a newer version.
+             *       See also https://github.com/npgsql/npgsql/issues/2411.
              */
-            Console.WriteLine("Running InsertGeo");
+            Console.WriteLine("Running InsertGeoJsonTyped");
 
             // Insert single data point.
             await using (var cmd = new NpgsqlCommand("""

by-language/csharp-npgsql/demo.csproj

@@ -12,6 +12,7 @@
   <ItemGroup>
     <PackageReference Include="GeoJSON.Net" Version="1.4.1" />
     <PackageReference Include="Npgsql" Version="9.0.4" />
+    <!-- <PackageReference Include="Npgsql.GeoJSON" Version="9.0.4" /> -->
     <PackageReference Include="CommandLineParser" Version="2.9.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="xunit" Version="2.9.3" />