.net 对文件设置权限的代码

/// <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 + "\\aspnet", filesystemrights.fullcontrol, accesscontroltype.allow));

dirinfo.setaccesscontrol(dirsecurity);
}