/Visual Studio 2008/CSListFilesInDirectory/MainForm.cs

/************************************* Module Header **************************************\

* Module Name:  MainForm.cs

* Project:      CSListFilesInDirectory

* Copyright (c) Microsoft Corporation.

* 

* The CSListFilesInDirectory project demonstrates how to implement an IEnumerable<string>

* that utilizes the Win32 File Management functions to enable application to get files and

* sub-directories in a specified directory one item a time.

* 

* This source is subject to the Microsoft Public License.

* See http://www.microsoft.com/opensource/licenses.mspx#Ms-PL.

* All other rights reserved.

* 

* History:

* * 7/7/2009 8:00 PM Jie Wang Created

\******************************************************************************************/



#region Using directives

using System;

using System.IO;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

#endregion





namespace CSListFilesInDirectory

{

    public partial class MainForm : Form

    {

        public MainForm()

        {

            InitializeComponent();

        }



        private void btnList_Click(object sender, EventArgs e)

        {

            try

            {

                int i = 0;

                DirectoryEnumerator.Mode mode =

                    (chkDir.Checked ? DirectoryEnumerator.Mode.Directory : 0) |

                    (chkFiles.Checked ? DirectoryEnumerator.Mode.File : 0);



                lstFiles.Items.Clear();



                string pattern = Path.Combine(txtDir.Text.Trim(), txtPattern.Text.Trim());

                DirectoryEnumerator de = new DirectoryEnumerator(pattern, mode);

                

                foreach (string file in de) // Enumerate items in the directory

                {

                    i++; // Increase the count

                    lstFiles.Items.Add(file);

                    Application.DoEvents();

                }



                lblCount.Text = string.Format("{0:#,##0} Item{1}", i, i != 1 ? "s" : string.Empty);

            }

            catch (Win32Exception winEx)

            {

                MessageBox.Show(winEx.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);

            }

        }



        private void txtDir_TextChanged(object sender, EventArgs e)

        {

            // Enable the List button if the target directory exists

            btnList.Enabled = Directory.Exists(txtDir.Text.Trim());

        }



        private void chkModes_CheckedChanged(object sender, EventArgs e)

        {

            // Enable the List button if at least one check box is selected

            btnList.Enabled = chkDir.Checked || chkFiles.Checked;

        }

    }

}