我创建了一个包含自定义成员资格提供程序的新项目，并覆盖ValidateUser了MembershipProvider抽象类中的方法：

public class MyMembershipProvider : MembershipProvider
{ 
    public override bool ValidateUser(string username, string password)
    {    
        // this is where you should validate your user credentials against your database.
        // I've made an extra class so i can send more parameters 
        // (in this case it's the CurrentTerritoryID parameter which I used as 
        // one of the MyMembershipProvider class properties).

        var oUserProvider = new MyUserProvider();  
        return oUserProvider.ValidateUser(username,password,CurrentTerritoryID);
    }
}

然后，通过添加引用并将其从我的web.config中指出，将该提供程序连接到我的ASP.NET MVC 2项目：

<membership defaultProvider="MyMembershipProvider">
    <providers>
        <clear />
        <add name="MyMembershipProvider"
            applicationName="MyApp"
            Description="My Membership Provider"
            passwordFormat="Clear"
            connectionStringName="MyMembershipConnection"
            type="MyApp.MyMembershipProvider" />
    </providers>
</membership>

我确实需要创建一个继承RoleProvider抽象类并重写该GetRolesForUser方法的自定义类。ASP.NET
MVC授权使用该方法找出将哪些角色分配给当前登录的用户，并确保允许该用户访问控制器操作。

这是我们需要采取的步骤：

1）创建一个自定义类，该类继承RoleProvider抽象类并覆盖GetRolesForUser方法：

public override string[] GetRolesForUser(string username)
{
    SpHelper db = new SpHelper();
    DataTable roleNames = null;
    try
    {
        // get roles for this user from DB...

        roleNames = db.ExecuteDataset(ConnectionManager.ConStr,
                    "sp_GetUserRoles",
                    new MySqlParameter("_userName", username)).Tables[0];
    }
    catch (Exception ex)
    {
        throw ex;
    }
    string[] roles = new string[roleNames.Rows.Count];
    int counter = 0;
    foreach (DataRow row in roleNames.Rows)
    {
        roles[counter] = row["Role_Name"].ToString();
        counter++;
    }
    return roles;
}

2）通过我们的web.config将角色提供程序与ASP.NET MVC 2应用程序连接：

<system.web>
...

<roleManager enabled="true" defaultProvider="MyRoleProvider">
    <providers>
        <clear />
        <add name="MyRoleProvider"
            applicationName="MyApp"
            type="MyApp.MyRoleProvider"
            connectionStringName="MyMembershipConnection" />
    </providers>
</roleManager>

...
</system.web>

3）在所需的控制器/操作上方设置Authorize（Roles =“ xxx，yyy”）：

[Authorization(Roles = "Customer Manager,Content Editor")]
public class MyController : Controller
{
    ...... 
}

而已！现在可以了！

4）可选：设置自定义Authorize属性，以便我们可以将不需要的角色重定向到AccessDenied页面：

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = false)]
public class MyAuthorizationAttribute : AuthorizeAttribute
{
    /// <summary>
    /// The name of the master page or view to use when rendering the view on authorization failure.  Default
    /// is null, indicating to use the master page of the specified view.
    /// </summary>
    public virtual string MasterName { get; set; }

    /// <summary>
    /// The name of the view to render on authorization failure.  Default is "Error".
    /// </summary>
    public virtual string ViewName { get; set; }

    public MyAuthorizationAttribute ()
        : base()
    {
        this.ViewName = "Error";
    }

    protected void CacheValidateHandler(HttpContext context, object data, ref HttpValidationStatus validationStatus)
    {
        validationStatus = OnCacheAuthorization(new HttpContextWrapper(context));
    }

    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        if (filterContext == null)
        {
            throw new ArgumentNullException("filterContext");
        }

        if (AuthorizeCore(filterContext.HttpContext))
        {
            SetCachePolicy(filterContext);
        }
        else if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
        {
            // auth failed, redirect to login page
            filterContext.Result = new HttpUnauthorizedResult();
        }
        else if (filterContext.HttpContext.User.IsInRole("SuperUser"))
        {
            // is authenticated and is in the SuperUser role
            SetCachePolicy(filterContext);
        }
        else
        {
            ViewDataDictionary viewData = new ViewDataDictionary();
            viewData.Add("Message", "You do not have sufficient privileges for this operation.");
            filterContext.Result = new ViewResult { MasterName = this.MasterName, ViewName = this.ViewName, ViewData = viewData };
        }
    }

    protected void SetCachePolicy(AuthorizationContext filterContext)
    {
        // ** IMPORTANT **
        // Since we're performing authorization at the action level, the authorization code runs
        // after the output caching module. In the worst case this could allow an authorized user
        // to cause the page to be cached, then an unauthorized user would later be served the
        // cached page. We work around this by telling proxies not to cache the sensitive page,
        // then we hook our custom authorization code into the caching mechanism so that we have
        // the final say on whether a page should be served from the cache.
        HttpCachePolicyBase cachePolicy = filterContext.HttpContext.Response.Cache;
        cachePolicy.SetProxyMaxAge(new TimeSpan(0));
        cachePolicy.AddValidationCallback(CacheValidateHandler, null /* data */);
    }
}

现在，我们可以使用自己的made属性将用户重定向到拒绝访问的视图：

[MyAuthorization(Roles = "Portal Manager,Content Editor", ViewName = "AccessDenied")]
public class DropboxController : Controller
{ 
    .......
}

而已！超级傻瓜！

这是我用来获取所有这些信息的一些链接：

自定义角色提供程序：http
:
//davidhayden.com/blog/dave/archive/2007/10/17/CreateCustomRoleProviderASPNETRolePermissionsSecurity.aspx

希望此信息对您有所帮助！