SqlMapper.LookupDbType

[ai2soft]

in method , SqlMapper.LookupDbType , typeHandlers.TryGetValue should move upward than typeMap.TryGetValue

          if (typeHandlers.TryGetValue(type, out handler))
            {
                return DbType.Object;
            }

            if (typeMap.TryGetValue(type, out var dbType))
            {
                return dbType;
            }