using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.IO; using System.Net; using System.Security.AccessControl; using System.Security.Principal; public partial class ACLChange : System.Web.UI.Page {     //文件夹路径     private string strDir = "images";     protected void Page_Load(object sender, EventArgs e)     {         if (!IsPostBack)         {             AddDirectorySecurity();         }     }     /// <summary>     /// 给文件夹添加ASPNET用户     /// </summary>     private void AddDirectorySecurity()     {         DirectoryInfo dirinfo = new DirectoryInfo(Server.MapPath(strDir));         if ((dirinfo.Attributes & FileAttributes.ReadOnly) != 0)         {             dirinfo.Attributes = FileAttributes.Normal;         }         //取得访问控制列表         DirectorySecurity dirsecurity = dirinfo.GetAccessControl();         string strDomain = Dns.GetHostName();         dirsecurity.AddAccessRule(new FileSystemAccessRule(strDomain + "[url=file://ASPNET/]\\ASPNET[/url]", FileSystemRights.FullControl, AccessControlType.Allow));         dirinfo.SetAccessControl(dirsecurity);     } }