Csharp/C Sharp/Security/FileIOPermissionAccess — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
(нет различий)
|
Текущая версия на 11:38, 26 мая 2010
FileIOPermissionAccess.AllAccess
using System;
using System.Collections.Generic;
using System.Text;
using System.Security;
using System.Security.Permissions;
class Program {
static void Main(string[] args) {
CodeAccessPermission permissionA = new FileIOPermission(FileIOPermissionAccess.AllAccess, @"C:\");
CodeAccessPermission permissionB = new FileIOPermission(FileIOPermissionAccess.Read, @"C:\temp");
if (permissionB.IsSubsetOf(permissionA)) {
Console.WriteLine("PermissionB is a subset of PermissionA");
} else {
Console.WriteLine("PermissionB is NOT a subset of PermissionA");
}
}
}
FileIOPermissionAccess.Append
using System;
using System.Collections.Generic;
using System.Text;
using System.Security;
using System.Security.Permissions;
using System.IO;
class Program {
static void Main(string[] args) {
CodeAccessPermission permission = new FileIOPermission(FileIOPermissionAccess.Append,@"C:\audit.txt");
permission.Deny();
AuditClass.Save("some data to audit");
CodeAccessPermission.RevertDeny();
}
}
class AuditClass {
public static void Save(string value) {
try {
FileIOPermission permission = new FileIOPermission(FileIOPermissionAccess.Append,@"C:\audit.txt");
permission.Assert();
FileStream stream = new FileStream(@"C:\audit.txt",FileMode.Append, FileAccess.Write);
CodeAccessPermission.RevertAssert();
Console.WriteLine("Data written to audit file");
} catch {
Console.WriteLine("Failed to write data to audit file");
}
}
}