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I've traced through the my method (below) at run time. Below the code I've included a screenshot of the Debug examination of the Portfolios list just before the return statement. I've expanded a couple of the list entries. As you can see, each Portfolio object contains bona fide data - a numeric Id and a string name.

Yet, here's what comes back to the Chrome browser, or postman, no difference.

[{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{}]

What's happening to all the data? Thanks for your help!

public class Portfolio 
{
public int id ;
public string name ;
}
 // GET: api/Portfolio
    [HttpGet]
    public List<Portfolio> Get()
    {
        List<Portfolio> Portfolios = new List<Portfolio>();

        using (SqlConnection cn = new SqlConnection(conn))
        {
            SqlCommand cmd = cn.CreateCommand();
            cmd.CommandText = sqlSelectPortfolios;
            cn.Open();
            SqlDataReader rdr = cmd.ExecuteReader();
            Portfolio pf;

            while (rdr.Read())
            {
                pf = new Portfolio
                {
                    id = (int)rdr["PortfolioId"],
                    name = (string)rdr["PortfolioName"]
                };

                Portfolios.Add(pf);
            }
        }

        return Portfolios;
    }

 

The id and name need to be public and properties. As of 3.0 System.Text.Json.JsonSerializer does not serialize fields.

Add {set;get;}

public class Portfolio 
{
public int id {get; set;}
public string name {get; set;}
}