多线程文件搜索Demo 【原创】

本Demo只是提供一钟思路，有兴趣的朋友可以在其基础上完善！用到了垮线程访问UI控件。

  using System.Threading;
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        Thread t = null;
        private int btnTimes = 0;
        public delegate void AddFileToListboxHandle(FileInfo fileFullName);
        public event AddFileToListboxHandle addfilenameEvent;
        private void AddFileToListbox(FileInfo f)
        {

            this.listBox1.Items.Add(f.Name);
            this.label1.Text = f.FullName;
        }
        delegate void finishedFindFileHandle(string A);
        private void FinishFindFile(string a)
        {

            this.label1.Text = a;
            this.label1.ForeColor = Color.Red;
        }
        public Form1()
        {
            InitializeComponent();
            this.addfilenameEvent += new AddFileToListboxHandle(AddFileToListbox);
        }

        private void button1_Click(object sender, EventArgs e)
        {

            string FilePath = "F://";
            if (t == null)
            {
                t = new Thread(new ParameterizedThreadStart(this.getFileName));
                if (t.IsAlive == false)
                {
                    t.Start(FilePath);
                    t.IsBackground = true;
                }
                else
                {
                    return;
                }
            }
        }
        private void getFileName(object b)
        {
            string filePath = b.ToString();
            if (Directory.Exists(filePath) == true)
            {

                DirectoryInfo fileContext = new DirectoryInfo(filePath);
                int fileCount = fileContext.GetFileSystemInfos().Length;
                if (fileCount == 0)
                {
                    return;
                }
                else
                {
                    FileSystemInfo[] fs = fileContext.GetFileSystemInfos();
                    foreach (FileSystemInfo f in fs)
                    {

                        if (f is FileInfo)
                        {

                            this.listBox1.Invoke(new AddFileToListboxHandle(this.AddFileToListbox), f);
                        }
                        else if (f is DirectoryInfo)
                        {
                            getFileName(f.FullName);

                        }

                    }
                  
                }
             

            }

        }