程序部份代码参考自：http://www.cnblogs.com/hjs1573/archive/2007/09/11/889826.html
客户端完整代码下载：C#软件自动在线更新源码
服务器空间文件列表：
/UpdateSize.ashx
/AutoUpdater //此文件夹放更新文件
/AutoUpdater/AutoUpdater.xml
UpdateSize.ashx：
<%@ WebHandler Language="C#" Class="UpdateSize" %>
using System;
using System.Web;
using System.IO;
public class UpdateSize : IHttpHandler {
public void ProcessRequest (HttpContext context) {
string dirPath = context.Server.MapPath("/AutoUpdater/");
context.Response.ContentType = "text/xml";
context.Response.Expires = -1;
context.Response.Write("<?xml version=\"1.0\" encoding=\"utf-8\" ?>");
context.Response.Write("<UpdateSize Size=\"" + GetUpdateSize(dirPath) + "\" />");
context.Response.End();
}
/// <summary>
/// 获取所有下载文件大小
/// </summary>
/// <returns>返回值</returns>
private static long GetUpdateSize(string dirPath)
{
//判断文件夹是否存在，不存在则退出
if (!Directory.Exists(dirPath))
return 0;
long len;
len = 0;
DirectoryInfo di = new DirectoryInfo(dirPath);
//获取所有文件大小
foreach (FileInfo fi in di.GetFiles())
{
//剔除升级数据文件
if (fi.Name != "AutoUpdater.xml")
len += fi.Length;
}
return len;
}
public bool IsReusable {
get {
return false;
}
}
}
AutoUpdater.xml：
<?xml version="1.0" encoding="utf-8" ?>
<AutoUpdater>
<UpdateInfo>
<!--升级文件的更新日期-->
<UpdateTime Date = "2008-08-06"/>
</UpdateInfo>
<!--升级文件列表-->
<UpdateFileList>
<UpdateFile>Maxthon207.exe</UpdateFile>
</UpdateFileList>
<UpdateFileList>
<UpdateFile>Maxthon207.exe</UpdateFile>
</UpdateFileList>
</AutoUpdater>
客户端
conf.config：
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="Url" value="http://localhost/" />
<add key="UpDate" value="2008-08-06" />
</appSettings>
</configuration>
AutoUpdater.cs：
using System;
using System.ComponentModel;
using System.Data;
using System.Globalization;
using System.IO;
using System.Net;
using System.Text;
using System.Windows.Forms;
using System.Xml;
namespace Yesuo
{
public partial class AutoUpdater : Form
{
private WebClient downWebClient = new WebClient();
private static string dirPath;
private static long size;//所有文件大小
private static int count;//文件总数
private static string[] fileNames;
private static int num;//已更新文件数
private static long upsize;//已更新文件大小
private static string fileName;//当前文件名
private static long filesize;//当前文件大小
public AutoUpdater()
{
InitializeComponent();
}
private void ComCirUpdate_Load(object sender, EventArgs e)
{
dirPath = GetConfigValue("conf.config", "Url");
string thePreUpdateDate = GetTheLastUpdateTime(dirPath);
string localUpDate = GetConfigValue("conf.config", "UpDate");
if (!String.IsNullOrEmpty(thePreUpdateDate) && !String.IsNullOrEmpty(localUpDate))
{
if (DateTime.Compare(
Convert.ToDateTime(thePreUpdateDate, CultureInfo.InvariantCulture),
Convert.ToDateTime(localUpDate, CultureInfo.InvariantCulture)) > 0)
{
UpdaterStart();
}
else
{
UpdaterClose();
}
}
else
{
UpdaterClose();
}
//UpdaterStart();
}
/// <summary>
/// 开始更新
/// </summary>
private void UpdaterStart()
{
float tempf;
//委托下载数据时事件
this.downWebClient.DownloadProgressChanged += delegate(object wcsender, DownloadProgressChangedEventArgs ex)
{
this.label2.Text = String.Format(
CultureInfo.InvariantCulture,
"正在下载:{0} [ {1}/{2} ]",
fileName,
ConvertSize(ex.BytesReceived),
ConvertSize(ex.TotalBytesToReceive));
filesize = ex.TotalBytesToReceive;
tempf = ((float)(upsize + ex.BytesReceived) / size);
this.progressBar1.Value = Convert.ToInt32(tempf * 100);
this.progressBar2.Value = ex.ProgressPercentage;
};
//委托下载完成时事件
this.downWebClient.DownloadFileCompleted += delegate(object wcsender, AsyncCompletedEventArgs ex)
{
if (ex.Error != null)
{
MeBox(ex.Error.Message);
}
else
{
if (File.Exists(Application.StartupPath + "\\" + fileName))
{
File.Delete(Application.StartupPath + "\\" + fileName);
}
File.Move(Application.StartupPath + "\\AutoUpdater\\" + fileName, Application.StartupPath + "\\" + fileName);
upsize += filesize;
if (fileNames.Length > num)
{
DownloadFile(num);
}
else
{
SetConfigValue("conf.config", "UpDate", GetTheLastUpdateTime(dirPath));
UpdaterClose();
}
}
};
size = GetUpdateSize(dirPath + "UpdateSize.ashx");
if (size == 0)
UpdaterClose();
num = 0;
upsize = 0;
UpdateList();
if (fileNames != null)
DownloadFile(0);
}
/// <summary>
/// 获取更新文件大小统计
/// </summary>
/// <param name="filePath">更新文件数据XML</param>
/// <returns>返回值</returns>
private static long GetUpdateSize(string filePath)
{
long len;
len = 0;
try
{
WebClient wc = new WebClient();
Stream sm = wc.OpenRead(filePath);
XmlTextReader xr = new XmlTextReader(sm);
while (xr.Read())
{
if (xr.Name == "UpdateSize")
{
len = Convert.ToInt64(xr.GetAttribute("Size"), CultureInfo.InvariantCulture);
break;
}
}
xr.Close();
sm.Close();
}
catch (WebException ex)
{
MeBox(ex.Message);
}
return len;
}
/// <summary>
/// 获取文件列表并下载
/// </summary>
private static void UpdateList()
{
string xmlPath = dirPath + "AutoUpdater/AutoUpdater.xml";
WebClient wc = new WebClient();
DataSet ds = new DataSet();
ds.Locale = CultureInfo.InvariantCulture;
try
{
Stream sm = wc.OpenRead(xmlPath);
ds.ReadXml(sm);
DataTable dt = ds.Tables["UpdateFileList"];
StringBuilder sb = new StringBuilder();
count = dt.Rows.Count;
for (int i = 0; i < dt.Rows.Count; i++)
{
if (i == 0)
{
sb.Append(dt.Rows[i]["UpdateFile"].ToString());
}
else
{
sb.Append("," + dt.Rows[i]["UpdateFile"].ToString());
}
}
fileNames = sb.ToString().Split(',');
sm.Close();
}
catch (WebException ex)
{
MeBox(ex.Message);
}
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="arry">下载序号</param>
private void DownloadFile(int arry)
{
try
{
num++;
fileName = fileNames[arry];
this.label1.Text = String.Format(
CultureInfo.InvariantCulture,
"更新进度 {0}/{1} [ {2} ]",
num,
count,
ConvertSize(size));
this.progressBar2.Value = 0;
this.downWebClient.DownloadFileAsync(
new Uri(dirPath + "AutoUpdater/" + fileName),
Application.StartupPath + "\\AutoUpdater\\" + fileName);
}
catch (WebException ex)
{
MeBox(ex.Message);
}
}
/// <summary>
/// 转换字节大小
/// </summary>
/// <param name="byteSize">输入字节数</param>
/// <returns>返回值</returns>
private static string ConvertSize(long byteSize)
{
string str = "";
float tempf = (float)byteSize;
if (tempf / 1024 > 1)
{
if ((tempf / 1024) / 1024 > 1)
{
str = ((tempf / 1024) / 1024).ToString("##0.00", CultureInfo.InvariantCulture) + "MB";
}
else
{
str = (tempf / 1024).ToString("##0.00", CultureInfo.InvariantCulture) + "KB";
}
}
else
{
str = tempf.ToString(CultureInfo.InvariantCulture) + "B";
}
return str;
}
/// <summary>
/// 弹出提示框
/// </summary>
/// <param name="txt">输入提示信息</param>
private static void MeBox(string txt)
{
MessageBox.Show(
txt,
"提示信息",
MessageBoxButtons.OK,
MessageBoxIcon.Asterisk,
MessageBoxDefaultButton.Button1,
MessageBoxOptions.DefaultDesktopOnly);
}
/// <summary>
/// 关闭程序
/// </summary>
private static void UpdaterClose()
{
try
{
System.Diagnostics.Process.Start(Application.StartupPath + "\\ComCir.exe");
}
catch (Win32Exception ex)
{
MeBox(ex.Message);
}
Application.Exit();
}
/// <summary>
/// 读取.exe.config的值
/// </summary>
/// <param name="path">.exe.config文件的路径</param>
/// <param name="appKey">"key"的值</param>
/// <returns>返回"value"的值</returns>
internal static string GetConfigValue(string path, string appKey)
{
XmlDocument xDoc = new XmlDocument();
XmlNode xNode;
XmlElement xElem = null;
try
{
xDoc.Load(path);
xNode = xDoc.SelectSingleNode("//appSettings");
xElem = (XmlElement)xNode.SelectSingleNode("//add[@key=\"" + appKey + "\"]");
}
catch (XmlException ex)
{
MeBox(ex.Message);
}
if (xElem != null)
return xElem.GetAttribute("value");
else
return "";
}
/// <summary>
/// 设置.exe.config的值
/// </summary>
/// <param name="path">.exe.config文件的路径</param>
/// <param name="appKey">"key"的值</param>
/// <param name="appValue">"value"的值</param>
internal static void SetConfigValue(string path, string appKey, string appValue)
{
XmlDocument xDoc = new XmlDocument();
try
{
xDoc.Load(path);
XmlNode xNode;
XmlElement xElem1;
XmlElement xElem2;
xNode = xDoc.SelectSingleNode("//appSettings");
xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key=\"" + appKey + "\"]");
if (xElem1 != null) xElem1.SetAttribute("value", appValue);
else
{
xElem2 = xDoc.CreateElement("add");
xElem2.SetAttribute("key", appKey);
xElem2.SetAttribute("value", appValue);
xNode.AppendChild(xElem2);
}
xDoc.Save(Application.StartupPath + "\\" + path);
}
catch (XmlException ex)
{
MeBox(ex.Message);
}
}
/// <summary>
/// 判断软件的更新日期
/// </summary>
/// <param name="Dir">服务器地址</param>
/// <returns>返回日期</returns>
private static string GetTheLastUpdateTime(string Dir)
{
string LastUpdateTime = "";
string AutoUpdaterFileName = Dir + "AutoUpdater/AutoUpdater.xml";
try
{
WebClient wc = new WebClient();
Stream sm = wc.OpenRead(AutoUpdaterFileName);
XmlTextReader xml = new XmlTextReader(sm);
while (xml.Read())
{
if (xml.Name == "UpdateTime")
{
LastUpdateTime = xml.GetAttribute("Date");
break;
}
}
xml.Close();
sm.Close();
}
catch (WebException ex)
{
MeBox(ex.Message);
}
return LastUpdateTime;
}
}
}
