How to retrieve data from database to radiobuttonlist?

Supposed I have the form below with values coming from a database, how do I know which Item was selected selected? Please not value store on db is as text not true or false. 

---- aspx page-----

<form runat="server"><asp:RadioButtonList id="radiolist1" runat="server"><asp:ListItem GroupName="Software"AutoPostBack="true">Asp.net</asp:ListItem><asp:ListItem GroupName="Software"AutoPostBack="true">Coldfusion</asp:ListItem><asp:ListItem GroupName="Software"AutoPostBack="true">C</asp:ListItem><asp:ListItem  GroupName="Software"AutoPostBack="true">Other</asp:ListItem></asp:RadioButtonList><br><asp:Button text="Update" OnClick="submit" runat="server"/>

---aspx.cs ----

protected void Page_Load(object sender, EventArgs e)  {
        using (OracleConnection con = new OracleConnection(connectionString))  {
            string sql_select = "SELECT softwareType FROM HABBIESTABLE WHERE USER='" + id.ToString() + "'";
            OracleCommand cmnd = new OracleCommand(sql_select, con);
            con.Open();
            OracleDataReader reader = cmnd.ExecuteReader();

            while (reader.Read()) {                
  
                // I don't know what I am doing here below :( 
                ListItem item = new ListItem();
                item.Text = reader["softwareType"].ToString();
                item.Value = reader["RadioButtonMyItems"].ToString();               
                item.Selected = Convert.ToBoolean(reader["softwareType"]);
                RadioButtonCourses.Items.Add(item);
            } 

 }

I can't get it to work. Can you help?!

Thank you everyone