Development ASP.Net Tutorial


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



    Untitled Page


    
    
                             runat="server" 
                     AutoPostBack="True" 
                     Height="192px" 
                     OnSelectedIndexChanged="MyListBox_SelectedIndexChanged"
                     Width="200px">
        
        
        

    


File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections.Generic;
public partial class DictionaryCollection : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            Dictionary fruit = new Dictionary();
            fruit.Add(1, "A");
            fruit.Add(2, "B");
            fruit.Add(3, "C");
            fruit.Add(4, "D");
            fruit.Add(5, "E");
            fruit.Add(6, "F");
            fruit.Add(7, "G");
            fruit.Add(8, "H");
            MyListBox.DataSource = fruit;
            MyListBox.DataTextField = "Value"; 
            MyListBox.DataValueField = "Key";
            this.DataBind();
        }
    }
    protected void MyListBox_SelectedIndexChanged(object sender, EventArgs e)
    {
        lblMessage.Text = "You picked: " + MyListBox.SelectedItem.Text;
        lblMessage.Text += " which has the key: " + MyListBox.SelectedItem.Value;
    }
}