使用ServiceStack.OrmLite.SqlServer.Converters后的ASP.NET API异常

Question

我想在SQL Server 2016中使用SqlGeography的好处，并且在使用servicestack 4.5.14和ormlite的同时拥有Visual Studio 2017。

首先，我想将SqlGeography作为我所在位置的数据类型，但它会生成许多异常图片。

如果我使用DbGeography，则在按如下方式使用servicestack和ormlite时：

  Db.Insert(location);

它是一个例外：

System.Data.SqlClient.SqlException: 'A .NET Framework error occurred 
during execution of user-defined routine or aggregate "geography": 
System.FormatException: 24114: The label {Geography:{Coordina in the 
input well-known text (WKT) is not valid. Valid labels are POINT, 
LINESTRING, POLYGON, MULTIPOINT, MULTILINESTRING, MULTIPOLYGON, 
GEOMETRYCOLLECTION, CIRCULARSTRING, COMPOUNDCURVE, CURVEPOLYGON and 
FULLGLOBE (geography Data Type only).
System.FormatException: 
at Microsoft.SqlServer.Types.OpenGisTypes.ParseLabel(String input)
at 

Microsoft.SqlServer.Types.WellKnownTextReader.ParseTaggedText
(OpenGisType type)
at Microsoft.SqlServer.Types.WellKnownTextReader.Read(OpenGisType 
type, Int32 srid)
at Microsoft.SqlServer.Types.SqlGeography.ParseText(OpenGisType type, 
SqlChars taggedText, Int32 srid)
at 
Microsoft.SqlServer.Types.SqlGeography.GeographyFromText(OpenGisType 
type, SqlChars taggedText, Int32 srid)
at Microsoft.SqlServer.Types.SqlGeography.Parse(SqlString s)
.
The statement has been terminated.'