WebService.cs
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using System;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
using System.Xml;
using System.IO;
/// <summary>
///WebService 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService
{
public WebService()
{
//如果使用设计的组件，请取消注释以下行
//InitializeComponent();
}
[WebMethod(Description = "在线更新软件")]
//[SoapHeader("sHeader")]
public System.Xml.XmlDocument GetUpdateData()
{
//验证用户是否登陆
//if (sHeader == null)
// return null;
//if (!DataProvider.GetInstance.CheckLogin(sHeader.Username, sHeader.Password))
// return null;
//取得更新的xml模板内容
XmlDocument doc = new XmlDocument();
doc.Load(Server.MapPath("Update.xml"));
XmlElement root = doc.DocumentElement;
//看看有几个文件需要更新
XmlNode updateNode = root.SelectSingleNode("filelist");
string path = updateNode.Attributes["sourcepath"].Value;
int count = int.Parse(updateNode.Attributes["count"].Value);
//将xml中的value用实际内容替换
for (int i = 0; i < count; i++)
{
XmlNode itemNode = updateNode.ChildNodes[i];
string fileName = path + itemNode.Attributes["name"].Value;
FileStream fs = File.OpenRead(Server.MapPath(fileName));
itemNode.Attributes["size"].Value = fs.Length.ToString();
BinaryReader br = new BinaryReader(fs);
//这里是文件的实际内容，使用了Base64String编码
itemNode.SelectSingleNode("value").InnerText = Convert.ToBase64String(br.ReadBytes((int)fs.Length), 0, (int)fs.Length);
br.Close();
fs.Close();
}
return doc;
}
[WebMethod(Description = "取得更新版本")]
public string GetVer()
{
XmlDocument doc = new XmlDocument();
doc.Load(Server.MapPath("Update.xml"));
XmlElement root = doc.DocumentElement;
return root.SelectSingleNode("version").InnerText;
}
}