Dapper and mssql using stored procedure returning meaningful error

I have a stored procedure inserts a row, and some conditions returns result set or single error code but when I use dapper return always same return class. so I couldn't understand If code gives me error or message rather than successful result set.

    public static List<Result> Results(int Id)
    {
        using (IDbConnection connection = BL.DataProvider.OpenConnection())
        {
            return connection.Query<Result>("SearchResultGet", new { Id = Id }, commandType: CommandType.StoredProcedure).ToList();
        }
    }

ALTER PROCEDURE SearchResultGet
@Id int
AS
IF(id != 0)
SELECT * FROM XX WHERE Id = Id
ELSE
SELECT -1

codes are just sample, doesn't have any meaning.