using System.Security.Permissions;
using System.Security.Cryptography;
登陸成功後賦予權限
ClassLibrary.TestAppCredentials taCS = new ClassLibrary.TestAppCredentials("ss", new string[] { ClassLibrary.Roles.Admin.ToString() });
Thread.CurrentPrincipal = taCS;
PrincipalPermission pPerm = new PrincipalPermission(null, ClassLibrary.Roles.Admin.ToString(), true);
pPerm.Demand();
據個簡單的例子，檢查當前用戶是否具有Admin權限來決定顯示壹個按鈕：
this.btnShowAll.Visible = Thread.CurrentPrincipal.IsInRole(ClassLibrary.Roles.Admin.ToString());
當然了，這個Roles是妳自己定義的壹個枚舉類型而已。。。
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Text;
using System.Security;
using System.Security.Principal;
using System.Runtime.Serialization.Formatters.Binary;
using System.Xml.Serialization;
using System.IO;
namespace ClassLibrary
{
public enum Roles
{
Admin,
Manager,
Soles,
None
}
public class TestAppCredentials:IPrincipal
{
private GenericIdentity _Identity;
private StringCollection _roles = new StringCollection();
private DateTime _Created;
private bool _properlyInitted = false
public TestAppCredentials(string userName, string[] roles)
{
_Identity = new GenericIdentity(userName, "TestAppCredentials");
if (null != roles)
{
_roles.AddRange(roles);
}
_Created = DateTime.Now;
_properlyInitted = true;
}
#region IPrincipal 成員
[XmlIgnoreAttribute]
public IIdentity Identity
{
get
{
CheckProperlyInitted();
CheckExpired();
return _Identity;
}
}
public bool IsInRole(string role)
{
CheckProperlyInitted();
CheckExpired();
return _roles.Contains(role);
}
private void CheckProperlyInitted()
{
if (!_properlyInitted)
throw new SecurityException(
"Principal not properly initialized. Might be spoofed.");
}
private void CheckExpired()
{
if (_Created.AddHours(48) <= DateTime.Now)
throw new SecurityException("Credentials have expired.");
}
#endregion
}
}