microsoft.sqlserver.types's Introduction

Microsoft.SqlServer.Types

Forking for now from https://github.com/sponsors/dotMorten as its abandonded according to everythign I can see. Updating to support DotNet 6.0.
Will consider other updates as required. a .NET Standard implementation of the spatial types in Microsoft.SqlServer.Types

NuGet:

Install the package DomesticatedData.Microsoft.SqlServer.Types from NuGet.

Usage

Input parameter

Assigning SqlGeometry or SqlGeography to a command parameter:

   command.Parameters.AddWithValue("@GeographyColumn", mySqlGeography);
   command.Parameters["@GeometryColumn"].UdtTypeName = "Geography";

   command.Parameters.AddWithValue("@GeographyColumn", mySqlGeometry);
   command.Parameters["@GeometryColumn"].UdtTypeName = "Geometry"

The geometry will automatically be correctly serialized.

Reading geometry and geography

Use the common methods for getting fields of specific types:

   var geom1 = reader.GetValue(geomColumn) as SqlGeometry;
   var geom2 = reader.GetFieldValue<SqlGeometry>(geomColumn);
   var geom3 =  = SqlGeometry.Deserialize(reader.GetSqlBytes(geomColumn)); //Avoids any potential assembly-redirect issue. See https://docs.microsoft.com/en-us/sql/sql-server/install/warning-about-client-side-usage-of-geometry-geography-and-hierarchyid?view=sql-server-2014#corrective-action

Notes:

The spatial operations like intersection, area etc are not included here. You can perform these as part of your query instead and get them returned in a column.

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