diff --git a/winform1/Form1.cs b/winform1/Form1.cs
index 407f7a47f340d221cc7792a6a632b94c6c1fbc7d..d18af802ed4bc1ef5d26af75c2e4064766a868d1 100644
--- a/winform1/Form1.cs
+++ b/winform1/Form1.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Data;
 using System.Drawing;
 using System.Linq;
@@ -9,6 +9,7 @@ using System.IO;
 using System.Net;
 using System.Threading.Tasks;
 using Ionic.Zip;
+using System.Runtime.InteropServices;
 
 namespace winform1
 {
@@ -17,12 +18,15 @@ namespace winform1
         private Point m_mousePos;
         private bool m_isMouseDown;
         //要下载的文件的url
-        private const string m_url = "https://codechina.csdn.net/linxinfa/winform-download-demo/-/raw/master/winform1/res/guitar.zip";
-        //下载到本地的文件名
-        private const string m_saveFile = "./download.zip";
-        //加压目录
-        private const string m_unzipFile = "./unzip";
+        private const string m_url = "https://smallgame.download.lkgame.com/game_space/sfish/57/qgame_test/QQGameUnityDemo.zip";
+        private const long m_totalSize = 21388019;
+        private const string m_md5 = "44BB65977FBF90062E8A3F5521D84A11";
 
+        //下载到本地的文件名
+        private const string m_saveFile = "./qgame_unity_demo.zip";
+        //解压目录
+        private const string m_unzipFile = "./qgame_unity_demo";
+        private const string m_exePath = "./qgame_unity_demo/QQGameUnityDemo/QQGameDemo.exe";
 
         public Form1()
         {
@@ -30,7 +34,10 @@ namespace winform1
 
             InitUi();
 
-            StartDownload();
+            if (!TryOpenUnityDemoExe())
+            {
+                StartDownload();
+            }
         }
 
         private void InitUi()
@@ -47,6 +54,7 @@ namespace winform1
             progressBar.MouseDown += OnMouseDown;
             progressBar.MouseUp += OnMouseUp;
             progressBar.MouseMove += OnMouseMove;
+
             //提示语
             tipsLbl.Parent = pictureBg;
             processLbl.Parent = pictureBg;
@@ -54,7 +62,23 @@ namespace winform1
 
             //进度条
             progressBar.Minimum = 0;
-            progressBar.Maximum = 100;
+        }
+
+        private bool TryOpenUnityDemoExe()
+        {
+
+            if (File.Exists(m_saveFile) && DownloadThread.GetMD5FromFile(m_saveFile) != m_md5)
+            {
+                return false;
+            }
+
+            if (File.Exists(m_exePath))
+            {
+                WinExec(m_exePath, 1);
+                System.Environment.Exit(0);
+                return true;
+            }
+            return false;
         }
 
         #region 隐藏标题栏后支持移动窗口
@@ -98,19 +122,25 @@ namespace winform1
         /// 被委托调用,专门设置进度条最大值
         /// </summary>
         /// <param name="maxValue"></param>
-        public void SetMax(int maxValue)
+        public void UpdateProgressMaxValue(int maxValue)
         {
             progressBar.Maximum = maxValue;
+            UpdateTipsLbl("正在下载，请耐心等待");
+        }
+
+        public void UpdateTipsLbl(string txt)
+        {
+            tipsLbl.Text = txt;
         }
 
         /// <summary>
         /// 被委托调用,专门设置进度条当前值
         /// </summary>
         /// <param name="nowValue"></param>
-        private void SetNow(int nowValue)
+        private void UpdateProgressCurValue(int curValue)
         {
-            progressBar.Value = nowValue;
-            string nowValueStr = string.Format("{0:F}", (float)nowValue / this.progressBar.Maximum * 100);
+            progressBar.Value = curValue;
+            string nowValueStr = string.Format("{0:F}", (float)curValue / progressBar.Maximum * 100);
             processLbl.Text = nowValueStr + "%";
         }
         #endregion
@@ -119,12 +149,13 @@ namespace winform1
         {
             DownloadThread method = new DownloadThread();
             //先订阅一下事件
-            method.threadStartEvent += new EventHandler(DownloadThreadStartEvent);
-            method.threadEvent += new EventHandler(DownloadThreadIngEvent);
-            method.threadEndEvent += new EventHandler(DownloadThreadEndEvent);
+            method.eventDownloadStart += OnEventDownloadStart;
+            method.eventDownloadIng += OnEventDownloadIng;
+            method.eventCheckingMd5 += OnEventCheckMd5;
+            method.eventDownloadDone += OnEventDownloadDone;
 
             //开启一个线程进行下载
-            Task task = new Task(() => { method.RunMethod(m_url, m_saveFile); });
+            Task task = new Task(() => { method.RunMethod(m_url, m_saveFile, m_totalSize, m_md5); });
             task.Start();
         }
 
@@ -136,37 +167,38 @@ namespace winform1
             }
         }
 
-        /// <summary>
+
         /// 线程开始事件,设置进度条最大值
-        /// 但是我不能直接操作进度条,需要一个委托来替我完成
-        /// </summary>
-        /// <param name="sender">ThreadMethod函数中传过来的最大值</param>
-        /// <param name="e"></param>
-        void DownloadThreadStartEvent(object sender, EventArgs e)
+        /// 但是不能直接操作进度条,需要一个委托来替我完成
+        void OnEventDownloadStart(long totalSize)
         {
-            int maxValue = Convert.ToInt32(sender);
-            Invoke(new Action<int>(SetMax), maxValue);
+            Invoke(new Action<int>(UpdateProgressMaxValue), (int)totalSize);
         }
 
-        /// <summary>
         /// 线程执行中的事件,设置进度条当前进度
-        /// 但是我不能直接操作进度条,需要一个委托来替我完成
-        /// </summary>
-        /// <param name="sender">ThreadMethod函数中传过来的当前值</param>
-        /// <param name="e"></param>
-        void DownloadThreadIngEvent(object sender, EventArgs e)
+        /// 但是不能直接操作进度条,需要一个委托来替我完成
+        void OnEventDownloadIng(long curDownloadSize)
         {
-            int nowValue = Convert.ToInt32(sender);
-            Invoke(new Action<int>(SetNow), nowValue);
+            Invoke(new Action<int>(UpdateProgressCurValue), (int)curDownloadSize);
+        }
+
+        void OnEventCheckMd5()
+        {
+            Invoke(new Action<string>(UpdateTipsLbl), "正在校验文件，请稍等");
         }
 
         /// <summary>
         /// 线程完成事件
         /// </summary>
-        void DownloadThreadEndEvent(object sender, EventArgs e)
+        void OnEventDownloadDone()
         {
-            MessageBox.Show("下载完成完成，点击确定执行解压");
+            //解压文件
             UnZipFile(m_saveFile);
+            //尝试打开下载的exe
+            TryOpenUnityDemoExe();
         }
+
+        [DllImport("kernel32.dll")]
+        public static extern int WinExec(string exeName, int operType);
     }
 }