Crystal report doesn't show data

Hi

I created a crystal report but it doesn't show data.

It works with a free online database. The web page in my example is: WebForm2.aspx

I am not sure about the exact error.

This the link of the project: https://drive.google.com/open?id=0B7y0uYSDVYmJV3Y3OC1qcm1oRFE

My c# code: 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Microsoft.Reporting.WebForms;
using System.Diagnostics;
using CrystalDecisions.CrystalReports.Engine;

namespace WebApplication1
{
public partial class WebForm2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
}
}

private void Crystal()
{
var tiempo = new Stopwatch();
tiempo.Start();
var db = ClassDB.Reporting();

var reporte = new ReportDocument();
reporte.Load(Server.MapPath("~/CrystalReport1.rpt"));

reporte.SetDataSource(db);

this.CrystalReportViewer1.ReportSource = reporte;
CrystalReportViewer1.DataBind();
tiempo.Stop();

Response.Write("crystal: " + tiempo.ElapsedMilliseconds);
}

protected void Button1_Click(object sender, EventArgs e)
{
Crystal();
}
}
}

The first page is: WebForm2.aspx and you only have to perform click in "button"..

The unique error that I receive is : Function evaluation was disabled because a previous function evaluation exceeded the specified time 

in the line: reporte.SetDataSource(db);

This is the method which load the data...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.SqlClient;
using CrystalDecisions.CrystalReports.Engine;

namespace WebApplication1
{
public static class ClassDB
{
public static List<test> Reporting()
{
var results = new List<test>();
using (SqlConnection _con = new SqlConnection("server=TestReporting.mssql.somee.com;database=TestReporting;user id=aguil172;pwd=Server01"))
{
string queryStatement = "select * from test";

using(SqlCommand _cmd = new SqlCommand(queryStatement, _con))
{
_con.Open();
using (SqlDataReader reader = _cmd.ExecuteReader(CommandBehavior.CloseConnection))
{
int codigo = reader.GetOrdinal("codigo");

while (reader.Read())
{
var test = new test
{
codigo = (int)reader[codigo]
};
results.Add(test);
}

}
}

return results.Where(x=> x.codigo == 0).ToList();
}

}

}

public class test
{
public int codigo { get; set; }
}
}

This is the crystal report: