通过代码更改ASP.NET Membership提供程序

Question

我们需要在ASP.NET WebFroms应用程序中同时支持两个成员资格提供程序。用户通过勾选复选框表示希望通过Asp Net Sql Membership Provider或Asp Net Active Directory Membership Provider进行登录。

我的想法是根据复选框的选中值以编程方式更改成员资格提供程序。但不知道如何实现。

非常感谢任何帮助。

- Afshar Mohebi

---

也许你可以使用这个链接：http://msdn.microsoft.com/en-us/library/system.web.security.membershipprovidercollection.item.aspx（记得在web.config文件中列出所有提供程序）。通过返回的MembershipProvider，你可以使用这些方法：http://msdn.microsoft.com/en-us/library/system.web.security.membershipprovider_methods.aspx。 - Tim Schmelter

@TimSchmelter：我之前已经审查过它们了。现在我正在检查Steven的解决方案。顺便说一句，感谢你的帮助。 - Afshar Mohebi

Answer 1

你需要的是一个组合提供程序，它包装了两个真实提供程序和一个可以确定应该使用哪个提供程序的服务。 更新 你的CompositeProvider可能如下所示，并且可以像任何其他提供程序一样在web.config中注册。

public class CompositeProvider : MembershipProvider
{
    private MembershipProvider SqlProvider
    {
        get { return Membership.Providers["Sql Provider"]; }
    }

    private MembershipProvider AdProvider
    {
        get { return Membership.Providers["Ad Provider"]; }
    }

    // This property implements the logic that knows how
    // to switch between the two providers.
    private MembershipProvider Provider
    {
        get
        {
            var context = HttpContext.Current;

            if (context != null)
            {
                var session = context.Session;

                if (session != null &&
                    session["use_ad_provider"] == "true")
                {
                    return AdProvider;
                }
            }

            return SqlProvider;
        }
    }

    public override bool ChangePassword(string username, 
        string oldPassword, string newPassword)
    {
        return Provider.ChangePassword(username, oldPassword, newPassword);
    }

    public override bool DeleteUser(string username, 
        bool deleteAllRelatedData)
    {
        return Provider.DeleteUser(username, deleteAllRelatedData);
    }

    public override bool EnablePasswordReset
    {
        get { return Provider.EnablePasswordReset; }
    }

    public override bool EnablePasswordRetrieval
    {
        get { return Provider.EnablePasswordRetrieval; }
    }

    // TODO: Implementation of all other members.
}

- Steven

---

我已经尝试过，但没有成功。事实上，我不想涉及ActiveDirectory成员资格的低级细节。我尝试了这个：https://dev59.com/40_Sa4cB1Zd3GeqP8gQW - Afshar Mohebi

你的更新非常有希望。我正在测试它。由于我们代码中出现了一些问题，需要一些时间才能确定它是否是答案。提前感谢。 - Afshar Mohebi

感谢您的解决方案。最终它确实起作用了。我们自己基础代码中的一个问题是错误使用了“Login.Authenticate事件”。http://stackoverflow.com/questions/821395/handling-login-authenticate-event - Afshar Mohebi

Answer 2

这基本上是与Steven相同的答案，但具有完全实现的类（为了节省其他人编写全部内容的时间）。

public class CompositeProvider : MembershipProvider
{

    public override string ApplicationName
    {
        get
        {
            return _provider.ApplicationName;
        }
        set
        {
            _provider.ApplicationName = value;
        }
    }

    private MembershipProvider _provider
    {
        get
        {
            // Insert your logic here to change between multiple providers
            if(SomeCondition == true)
                return Membership.Providers["AspNetSqlMembershipProvider"];
            else
                return Membership.Providers["AspNetSqlMembershipProvider2"];
        }
    }

    public override bool ChangePassword(string username, string oldPassword, string newPassword)
    {
        return _provider.ChangePassword(username, oldPassword, newPassword);
    }

    public override bool ChangePasswordQuestionAndAnswer(string username, string password, string newPasswordQuestion, string newPasswordAnswer)
    {
        return _provider.ChangePasswordQuestionAndAnswer(username, password, newPasswordQuestion, newPasswordAnswer);
    }

    public override MembershipUser CreateUser(string username, string password, string email, string passwordQuestion, string passwordAnswer, bool isApproved, object providerUserKey, out MembershipCreateStatus status)
    {
        return _provider.CreateUser(username, password, email, passwordQuestion, passwordAnswer, isApproved, providerUserKey, out status);
    }

    public override bool DeleteUser(string username, bool deleteAllRelatedData)
    {
        return _provider.DeleteUser(username, deleteAllRelatedData);
    }

    public override bool EnablePasswordReset
    {
        get { return _provider.EnablePasswordReset; }
    }

    public override bool EnablePasswordRetrieval
    {
        get { return _provider.EnablePasswordRetrieval; }
    }

    public override MembershipUserCollection FindUsersByEmail(string emailToMatch, int pageIndex, int pageSize, out int totalRecords)
    {
        return _provider.FindUsersByEmail(emailToMatch, pageIndex, pageSize, out totalRecords);
    }

    public override MembershipUserCollection FindUsersByName(string usernameToMatch, int pageIndex, int pageSize, out int totalRecords)
    {
        return _provider.FindUsersByName(usernameToMatch, pageIndex, pageSize, out totalRecords);
    }

    public override MembershipUserCollection GetAllUsers(int pageIndex, int pageSize, out int totalRecords)
    {
        return _provider.GetAllUsers(pageIndex, pageSize, out totalRecords);
    }

    public override int GetNumberOfUsersOnline()
    {
        return _provider.GetNumberOfUsersOnline();
    }

    public override string GetPassword(string username, string answer)
    {
        return _provider.GetPassword(username, answer);
    }

    public override MembershipUser GetUser(string username, bool userIsOnline)
    {
        return _provider.GetUser(username, userIsOnline);
    }

    public override MembershipUser GetUser(object providerUserKey, bool userIsOnline)
    {
        return _provider.GetUser(providerUserKey, userIsOnline);
    }

    public override string GetUserNameByEmail(string email)
    {
        return _provider.GetUserNameByEmail(email);
    }

    public override int MaxInvalidPasswordAttempts
    {
        get { return _provider.MaxInvalidPasswordAttempts; }
    }

    public override int MinRequiredNonAlphanumericCharacters
    {
        get { return _provider.MinRequiredNonAlphanumericCharacters; }
    }

    public override int MinRequiredPasswordLength
    {
        get { return _provider.MinRequiredPasswordLength; }
    }

    public override int PasswordAttemptWindow
    {
        get { return _provider.PasswordAttemptWindow; }
    }

    public override MembershipPasswordFormat PasswordFormat
    {
        get { return _provider.PasswordFormat; }
    }

    public override string PasswordStrengthRegularExpression
    {
        get { return _provider.PasswordStrengthRegularExpression; }
    }

    public override bool RequiresQuestionAndAnswer
    {
        get { return _provider.RequiresQuestionAndAnswer; }
    }

    public override bool RequiresUniqueEmail
    {
        get { return _provider.RequiresUniqueEmail; }
    }

    public override string ResetPassword(string username, string answer)
    {
        return _provider.ResetPassword(username, answer);
    }

    public override bool UnlockUser(string userName)
    {
        return _provider.UnlockUser(userName);
    }

    public override void UpdateUser(MembershipUser user)
    {
        _provider.UpdateUser(user);
    }

    public override bool ValidateUser(string username, string password)
    {
        return _provider.ValidateUser(username, password);
    }
}

- Bryan Denny