3    //IIS网站名称
 4    string WebName=@"MyWeb";
5    //某文件绝对路径为
 6    string LocalDir=@"C:\Inetpub\wwwroot\MyWeb\1\1.txt";
7    private string LocalDirToWebDir(string LDir)
8    {
9        string[] ArrayLocalDirSplit = LDir.Split(Convert.ToChar(@"\"));
10        int i=0;
11        do
12        {
13            i++;
14        }
15        while (ArrayLocalDirSplit[i] != WebName);
16        string WebDir = "";
17        for (int j=i+1; j < ArrayLocalDirSplit.Length-1; j++)
18        {
19            WebDir = WebDir + ArrayLocalDirSplit[j] + @"/";
20        }
21        WebDir = WebDir + ArrayLocalDirSplit[ArrayLocalDirSplit.Length - 1];
22        return WebDir;
23    }
24
25
26    //获取相对路径的按钮事件,以Response.Write输出
27    protected void Btn1_Click(object sender, EventArgs e)
28    {
29        Response.Write(LocalDirToWebDir(LocalDir));
30    }
31