Guid convert to String issue

Hi everyone,
i try used Dapper in my project, but i found a basic problem when i try use Dapper convert Guid type in Sqlserver to C# string type, it prompt to me

Error parsing column 0 (ID=6c2adb93-d81a-4fda-8e25-c6e90d4ebaaa - Object)

now i have to write a typehandler for myself and its only converted string type by ToString()

public class StringGuidHandler:SqlMapper.TypeHandler<string>
   {
       public override void SetValue(IDbDataParameter parameter, string value)
       {
           parameter.Value = value;
       }

       public override string Parse(object value)
       {
           return value.ToString();
       }
   }

No source file or test is named in the issue. Start by reproducing the SQL Server Guid-to-C# string mapping and trace Dapper's column conversion path, comparing it with the custom StringGuidHandler shown. Done means the mapping succeeds without a user-defined handler and has a regression test for the reported value.