Source Code
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace ComboBox { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { comboBox1.Items.Add("BATA"); comboBox1.Items.Add("SERVICE"); } private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) { comboBox2.Items.Clear(); if (comboBox1.SelectedItem == "BATA") { comboBox2.Items.Add("BATA MALE SHOES"); comboBox2.Items.Add("BATA LADIES SHOES"); comboBox2.Items.Add("BATA KIDS SHOES"); } else if (comboBox1.SelectedItem == "SERVICE") { comboBox2.Items.Add("SERVICE LADIES SHOES"); comboBox2.Items.Add("SERVICE MALE SHOES"); comboBox2.Items.Add("SERVICE KIDS SHOES"); } } } }