ASP.Net 2 入门（二）――用户登录和注销

实现自己的SimpleMembershipProvider类

/// <summary> /// SimpleMembershipProvider 的摘要说明 /// </summary> public class SimpleMembershipProvider : MembershipProvider { public SimpleMembershipProvider() { // // TODO: 在此处添加构造函数逻辑 // } public override string ApplicationName { get { return ("SimpleMembershipProvider Application"); } set { } } public override bool ChangePassword(string username, string oldPassword, stringnewPassword) { return (true); //throw new Exception("The method or operation is not implemented."); } public override bool ChangePasswordQuestionAndAnswer(string username, string password,string newPasswordQuestion, string newPasswordAnswer) { return (true); //throw new Exception("The method or operation is not implemented."); } public override MembershipUser CreateUser(string username, string password, string email,string passwordQuestion, string passwordAnswer, bool isApproved, object providerUserKey,out MembershipCreateStatus status) { status = MembershipCreateStatus.Success; return (null); //throw new Exception("The method or operation is not implemented."); } public override bool DeleteUser(string username, bool deleteAllRelatedData) { return (true); //throw new Exception("The method or operation is not implemented."); } public override bool EnablePasswordReset { get { return (true); } } public override bool EnablePasswordRetrieval { get { return (true); } } public override MembershipUserCollection FindUsersByEmail(string emailToMatch, intpageIndex, int pageSize, out int totalRecords) { totalRecords = 0; return (null); //throw new Exception("The method or operation is not implemented."); } public override MembershipUserCollection FindUsersByName(string usernameToMatch, intpageIndex, int pageSize, out int totalRecords) { totalRecords = 0; return (null); //throw new Exception("The method or operation is not implemented."); } public override MembershipUserCollection GetAllUsers(int pageIndex, int pageSize, out inttotalRecords) { totalRecords = 0; return (null); //throw new Exception("The method or operation is not implemented."); } public override int GetNumberOfUsersOnline() { return (1); //throw new Exception("The method or operation is not implemented."); } public override string GetPassword(string username, string answer) { return (string.Empty); //throw new Exception("The method or operation is not implemented."); } public override MembershipUser GetUser(string username, bool userIsOnline) { return (null); //throw new Exception("The method or operation is not implemented."); } public override MembershipUser GetUser(object providerUserKey, bool userIsOnline) { return (null); //throw new Exception("The method or operation is not implemented."); } public override string GetUserNameByEmail(string email) { return (string.Empty); //throw new Exception("The method or operation is not implemented."); } public override int MaxInvalidPasswordAttempts { get { return (7); } } public override int MinRequiredNonAlphanumericCharacters { get { return (1); } } public override int MinRequiredPasswordLength { get { return (1); } } public override int PasswordAttemptWindow { get { return (1); } } public override MembershipPasswordFormat PasswordFormat { get { return (MembershipPasswordFormat.Clear); } } public override string PasswordStrengthRegularExpression { get { return (string.Empty); } } public override bool RequiresQuestionAndAnswer { get { return (true); } } public override bool RequiresUniqueEmail { get { return (true); } } public override string ResetPassword(string username, string answer) { return (string.Empty); //throw new Exception("The method or operation is not implemented."); } public override bool UnlockUser(string userName) { return (false); //throw new Exception("The method or operation is not implemented."); } public override void UpdateUser(MembershipUser user) { //throw new Exception("The method or operation is not implemented."); } public override bool ValidateUser(string username, string password) { if (username.ToLower() == "gavinlv") { if (password == "GavinLv") { return (true); } } return (false); } }

这里仅仅为了实验用，所以仅简单的实现了ValidateUser(string, string) : bool方法，这个方法用来验证用户名和密码是否正确，并返回验证结果（True|False）。

创建一个新的Web项目

在Default.aspx上放一个LoginStatus控件（System.Web.UI.WebControls.LoginStatus），并命名为loginStatus。这个控件将根据当前账号登录的状态的不同而自动显示不同的状态，账号已登录后为"注销"，账号登录前为"登录"。

在Default.aspx上放一个LoginName控件（System.Web.UI.WebControls.LoginName），并命名为loginName。这个控件将显示当前登录的账号名。

新建一个Web窗体：Login.aspx

在Login.aspx上放一个Login控件（System.Web.UI.WebControls.Login），并命名为login

在属性窗口中设置login控件的DestinationPageUrl设置为Default.aspx

配置Web.config文件

如果项目中没有web.config文件，那就添加一个

设置authentication字段

<authentication mode="Forms"> <forms loginUrl="login.aspx" name=".ASPXFORMSAUTH" /> </authentication>

设置membership字段，使前面的SimpleMembershipProvider类实现其价值

<membership defaultProvider="SimpleProvider" userIsOnlineTimeWindow="15"> <providers> <add name="SimpleProvider" type="SimpleMembershipProvider" enablePasswordRetrieval="true" enablePasswordReset="true" requiresQuestionAndAnswer="true" writeExceptionsToEventLog="true" /> </providers> </membership>

完成

编译、查看网页，登录注销功能就搞定了