ASP Net Controls ASP.Net Tutorial

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" 
    Inherits="Data" %>



    Bullets & Radios


    
        
                            OnSelectedIndexChanged="BulletOptions_SelectedIndexChanged" 
                RepeatColumns="3" 
                RepeatDirection="Horizontal" />
            
                            BulletImageUrl="/core35/images/bullet.gif" />
        
    



File: Default.aspx.cs
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Data : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    if (!IsPostBack)
    {
      FillOptions();
      FillCountries();
    }
  }
  protected void FillOptions()
  {
    BulletOptions.DataSource = Enum.GetValues(typeof(BulletStyle));
    BulletOptions.SelectedIndex = 0;
    BulletOptions.DataBind();
  }
  protected void FillCountries()
  {
    string connString = ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString;
    string cmdText = "SELECT DISTINCT country FROM customers";
    DataTable data = new DataTable();
    SqlDataAdapter adapter = new SqlDataAdapter(cmdText, connString);
    adapter.Fill(data);
    BulletedList1.DataSource = data;
    BulletedList1.DataTextField = "country";
    BulletedList1.DataBind();
  }
  protected void BulletOptions_SelectedIndexChanged(object sender, EventArgs e)
  {
    BulletStyle style = (BulletStyle) Enum.Parse(typeof(BulletStyle), BulletOptions.SelectedValue);
    BulletedList1.BulletStyle = style;
  }
}