list_directory.cs

using System;
using System.Windows.Forms;
//////////////////////////////
using System.IO;

namespace List_Directory
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
    
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            listBox1.Items.Add("..");
            try
            {
                string[] folders = Directory.GetDirectories(comboBox1.Text);
                for (int i = 0; i < folders.Length; i++)
                {
                    listBox1.Items.Add(folders[i]);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            comboBox1.Items.Clear();

            string[] drives = Directory.GetLogicalDrives();
            comboBox1.Items.AddRange(drives);
            comboBox1.SelectedIndex = 0;
        }

        private void listBox1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            int index = listBox1.SelectedIndex;
            string path = listBox1.Items[index].ToString();
            //MessageBox.Show(path);
            listBox1.Items.Clear();
            listBox1.Items.Add("..");
            try
            {
                string[] folders = Directory.GetDirectories(path);
                for (int i = 0; i < folders.Length; i++)
                {
                    listBox1.Items.Add(folders[i]);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }

    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.button1 = new System.Windows.Forms.Button();
            this.comboBox1 = new System.Windows.Forms.ComboBox();
            this.SuspendLayout();
            // 
            // listBox1
            // 
            this.listBox1.FormattingEnabled = true;
            this.listBox1.Location = new System.Drawing.Point(12, 40);
            this.listBox1.Name = "listBox1";
            this.listBox1.Size = new System.Drawing.Size(345, 342);
            this.listBox1.TabIndex = 0;
            this.listBox1.MouseDoubleClick += new System.Windows.Forms.MouseEventHandler(this.listBox1_MouseDoubleClick);
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(278, 13);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 2;
            this.button1.Text = "List";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // comboBox1
            // 
            this.comboBox1.FormattingEnabled = true;
            this.comboBox1.Location = new System.Drawing.Point(13, 13);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Size = new System.Drawing.Size(259, 21);
            this.comboBox1.TabIndex = 3;
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(371, 406);
            this.Controls.Add(this.comboBox1);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.listBox1);
            this.Name = "Form1";
            this.Text = "Directory Manager";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.ListBox listBox1;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.ComboBox comboBox1;
    }
}