using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Threading;
using System.Text.RegularExpressions;
namespace MyDelete
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        Thread thread;//构造线程
        List<string> msgList = new List<string>();
        private void StartBtn_Click(object sender, EventArgs e)
        {
            if(this.FilePath.Text==null || this.FilePath.Text==string.Empty)
            {
                MessageBox.Show("文件路径不能为空","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
                return;
            }
            Regex reg = new Regex(@"[url=file://\\[^\\]*$]\\[^\\]*$[/url]", RegexOptions.IgnoreCase);
            if(!reg.IsMatch(this.FilePath.Text))
            {
                MessageBox.Show("请输入正确的文件路径", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }
            thread = new Thread(new ParameterizedThreadStart(DeleteFiles));//委托线程调用带参数的方法
            thread.IsBackground = true;
            thread.Start(this.FilePath.Text); //执行删除方法     
        }
        delegate void InvokeText(string str);
        public void DeleteFiles(object state)//定义一个删除文件的方法
        {
            string filenameslog = "";//用来保存删除记录
            int deletefiles = 0;
            string strDir = state as string;
            while (true)
            {
                if (Directory.Exists(strDir))//判断指定的目录是否存在
                {
                    string[] strFiles = Directory.GetFiles(strDir);//获取该目录下的所有文件      
                    if (strFiles.Length > 0)//判断文件夹下是否有文件
                    {
                        filenameslog = (++deletefiles) + "：" + "删除成功，时间：" + DateTime.Now.ToString() + "\r\n";
                        InvokeText txt = delegate(string text)
                       {
                           msgList.Add(text);
                           if (msgList.Count > 10)
                           {
                               msgList.RemoveAt(0);
                           }
                           string msgs = "";
                           foreach (string s in msgList)
                           {
                               msgs += s;
                           }
                           this.DeleteLog.Text = msgs;
                       };
                        this.DeleteLog.Invoke(txt, new object[1] { filenameslog });
                        foreach (string strFile in strFiles)
                        {
                            File.Delete(strFile);
                        }
                    }

                }
                Thread.Sleep(1500);
            }
        }
        private void Form1_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
                this.Visible = false;
            else
                this.Visible = true;   
        }
        private void notifyIcon1_DoubleClick(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                this.Visible = true;
                this.WindowState = FormWindowState.Normal;
            }
            else
                this.Visible = true;   
        }
        private void ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
        private void Form1_Load(ob