Implementation of Generic SQL Data Reader

I am using below virtual method to read the data from SQL Data Reader like:

public IList<District> GetList()
{
    IList<District> _list = new List<District>();

    SqlConnection con = new SqlConnection(ConStr);
    try
    {
        string StoreProcedure = ConfigurationManager.AppSettings["SP"].ToString();

        SqlCommand cmd = new SqlCommand(StoreProcedure, con);
        cmd.CommandType = CommandType.StoredProcedure;
        con.Open();
        SqlDataReader rdr = cmd.ExecuteReader();
        _list = new GenericReader<District>().CreateList(rdr);
        rdr.Close();
        con.Close();
    }
    finally
    {
        IsConnectionOpenThenClose(con);
    }
    return _list;
}

District Class:

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

And GenericReader Class as:

public class GenericReader<T>
{
    public virtual List<T> CreateList(SqlDataReader reader)
    {
        var results = new List<T>();

        while (reader.Read())
        {
            var item = Activator.CreateInstance<T>();
            foreach (var property in typeof(T).GetProperties())
            {
                if (!reader.IsDBNull(reader.GetOrdinal(property.Name)))
                {
                    Type convertTo = Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType;
                    property.SetValue(item, Convert.ChangeType(reader[property.Name], convertTo), null);
                }
            }
            results.Add(item);
        }
        return results;
    }
}

Is this approach is better or still, we can refactor?